Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba47334fd8e768a2…

MALICIOUS

PDF

82.1 KB Created: 2021-09-07 07:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d8038fe28b6963f8edd2386e43e1a0f7 SHA-1: 6cc04143aeaf1027390a0631a8b47771176f087e SHA-256: ba47334fd8e768a2457a08f13cfcbe3f16e26651b6c6630f41ada9dbd2cbfa70
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs that point to compromised websites and link farms, suggesting an attempt to redirect users to malicious content. The presence of these links indicates a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://drafthe.ru/uplcv?utm_term=organizational+structure+and+personnel+management+pdf PDF link annotation
    • https://planet-for-events.de/userfiles/file/77274351378.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/duduvufakifujoregubovel.pdfIn PDF document text
    • http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/jazupilutetije.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ac797b1703c---zewapomelesepomumobab.pdfIn PDF document text
    • https://xistenze.com/files/files/rifokanedijututipobawizix.pdfIn PDF document text
    • https://ludbaegitim.com/calisma2/files/uploads/32753477573.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/efe421a516e48d7a5d7b7e0e2bfd19c2/dibowotapakumij.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc06456ea1---xibiwalijewikax.pdfIn PDF document text
    • http://franckjuery.com/ckfinder/uploads/files/69107228277.pdfIn PDF document text
    • http://hoteldanang.vn/uploads/images/files/648312521.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/48628996428.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/0e6db5a9e7564efeafff4ad2c5eee961/12188231724.pdfIn PDF document text
    • http://www.ekoforte.com/upload/file/vanepazavanipit.pdfIn PDF document text
    • http://imaginove.eu/data/Files/femejovabuwepej.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a168a1c7b---guvusodezevuresoba.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609689316ff3f---86714533049.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/f0665413a8f7ca9f119301bbada62c41/68647191251.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/d8788c982998238040dede874e560c47/tusul.pdfIn PDF document text
    • http://vds-construct.pl/userfiles/file/mobewekowalokupefumarus.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfb9b2838d---negoduradaxojesozoki.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b6d78d9a27dcf60a02a7a3358c93281f/60011955218.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/govalarixukiwemolotevi.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/ca44d803906c375fe37a9c7919dd3ca3/79763386548.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/1a8qpk5rl797s9eqo8nkm4hh5j/84711627310.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BB 11148 bytes
SHA-256: 0ab704223a3bb4d6a949b5f8a6e4903c005a76e57ffa258f1b9ca0319cb4b2fa
font_02_sfnt_off0001129c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129C 15628 bytes
SHA-256: bff4b1270cbe5ac8c8562e39007fc0d927a4214f787640443034a100213e4681

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