Malicious PDF — malware analysis report

Static analysis result for SHA-256 04fe8c2bebda262c…

MALICIOUS

PDF

92.0 KB Created: 2021-08-06 17:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8c7b2ff4407a8bba4479001b7591e4df SHA-1: ed6a324f51add42f888a4c7a253d72fc69caebdb SHA-256: 04fe8c2bebda262cd11b8542cfd90c3380e2bb17bb5ee72a9325455fdec16d77
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains a link farm directing to multiple domains, many of which appear to be compromised WordPress sites or disposable hosting. The primary purpose seems to be to lure users to these sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870c9f75e74---dejevogutalu.pdf In PDF document text
    • http://homelife-superstars.com/image/files/xabatederux.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16077d50d9e1d1---75172010904.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/48262875303.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160823012b98bb---34710138459.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/33699576277.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210727_33AE7D04B4DF4307.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe50a3c134---99992408316.pdfIn PDF document text
    • https://daxitrip.com/basefile/daxitripcom/files/59925823575.pdfIn PDF document text
    • https://robotics-institute.com/wp-content/plugins/super-forms/uploads/php/files/u9dhmojdgeain3ormukm7loi15/61036090540.pdfIn PDF document text
    • http://rainbowcaterers.in/userfiles/file/76028101276.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/woronixemegudujorejimaxaj.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a451b857b9---vemixozaxov.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607779b6e2ea4---3508247227.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/vitevirabilekuwafitu.pdfIn PDF document text
    • http://bi-acaovo.com/upload/files/30751388043.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/32650961718.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/951e6e3470d68159c37aaa81ed1bbb0f/24191574604.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/3df88d2f1d99d66212ecb127f6f23864/46399684008.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/22597cc57de74dd63fb5635eab804562/68927355360.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/53025500796.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/tifiniguvejakulobivedugu.pdfIn PDF document text
    • https://kovosluzba-praha.cz/res/file/titawajax.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083e5a40f183---woguwupiza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=dhoom+2+full+movie+hd+1080p+bluray+downloadPDF link annotation
    • 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_off0000fc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1F 11508 bytes
SHA-256: 186cb38f92d757507fc551d40b3ab41678495c8ed49ee63de9f396ee327de2e9
font_01_sfnt_off00011702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11702 19672 bytes
SHA-256: ac2e53f3b44496515c4aad45dd8ef3648373c26fab65f7976abfaf4f9b20d8ca
font_02_sfnt_off0001492e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1492E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1