Malicious PDF — malware analysis report

Static analysis result for SHA-256 e896a9c1acc88a1d…

MALICIOUS

PDF

77.6 KB Created: 2021-07-03 04:13:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: d1f3ee028930330f41c377298367b565 SHA-1: 07310eed2c8b8e5b4140ad059b08a4843f29b2e4 SHA-256: e896a9c1acc88a1d50535e2aa145e6aaeb3a0e0cd11af8c38cb68c62c220c1da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, and a specific URL that appears to be a redirector with a UTM term parameter. The file's structure suggests it functions as a link farm, likely intended to direct users to phishing sites or download further malware. No scripts were extracted, but the presence of numerous external links indicates a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infrive.ru/uplcv?utm_term=20000+chf+to+eur PDF link annotation
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16080ec26c8061---3142911236.pdfIn PDF document text
    • https://greenvalleykerala.com/ckfinder/userfiles/files/xunajapumutu.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8671678b70---8690866335.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160841e348c97f---jafeboteraris.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b926c8373a8---54584566638.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5b59db655---gurafiwu.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/14e2c9220bec58113d0e4f4ea48dc4ab/47307489556.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a0774f69592c687580b8466991ef0b85/nogigasirugamix.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/takifo.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed5e08880c---57544215775.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609265c789c45---gonisazapojitod.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/5de4efe9de2f9e249f6f2897eb1080b1/37550335768.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/32d120e0ecd3eee2892dc13f3a4b1d53/mipofeverugon.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/g1a8h4sus8m887iioigoc7d2n1/defavona.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/7i99r0jt891fbijk1h6ev0hke2/50127232662.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/e2e6498ac82475534eedf37ceaeeeb06/29118426924.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/a9fb53d86cf905c815269ea65d8ed1f8/susowinuresigisu.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/b09dvfj2ublp06fhcvp6t1v3d2/27219057825.pdfIn PDF document text
    • https://wemservice.com/ckfinder/userfiles/files/basepominagerulubavelifar.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/stktll77bsnmebsjlui3ug622d/90144563116.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/a2ad1f0d5145cd0e168118bf83f47917/lesemidewudobija.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ada2c1845b0---57769246706.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160837e7fac391---xotupujiledu.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983446be23e---47934507520.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b62327ba7da---tudadu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC6E 10108 bytes
SHA-256: 9f4a5161d3c485b030d36e49a5f1dbe9c158fcab7fe258a5dfb0d5876a9539ea
font_01_sfnt_off0000d322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD322 15696 bytes
SHA-256: aedc3a5de2f1adf07129fc9d2cf86b1baa0b9034550665688bb65389cd5990d9
font_02_sfnt_off0000fb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00011360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11360 16096 bytes
SHA-256: b5d8fb8356239b0da3dd43ad8e54ca839a0016726ba035576f5b8d707afefb81

Open this report in the interactive analyzer, or submit your own file for analysis.