Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e4fe8a12d35e6a1…

MALICIOUS

PDF

91.0 KB Created: 2021-08-15 10:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 13a7d22ce8f4180f5ce3c79b3593e112 SHA-1: 020f38ece03fc8a18d0715f2ba4f57cf9a12a99a SHA-256: 8e4fe8a12d35e6a14955cdc47d041c3ea4b63ba18059bb5d8e97d8b66be2ed08
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be compromised or disposable hosting, suggesting an attempt to redirect users to malicious content or phishing pages. No scripts were extracted, but the document's structure and URL patterns are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608e0b7141efa---15292692010.pdf
    • https://blogsma.com/files/72805954246.pdf
    • http://techhssilverbuffs.com/clients/61416/File/femirunufanapovowibox.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160df6f70c00fe---xopol.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/13b5f86bc15f5e04cb1d4dd530c144a6/6135914475.pdf
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/877d560cc6622028858a83cadc9e330e/nebinamekajedusinukegave.pdf
    • http://shinex-auto.com/userfiles/file/fesubitobafisezuba.pdf
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/953f601a68b797945e3cbde331de8310/76234632528.pdf
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/13a7526ae68a39794173261413af0b8e/98202861752.pdf
    • http://nitexprofi.cz/userfiles/file/906752377.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d1a34a88b17---vugosibowo.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610061ee2397c---xedupogi.pdf
    • https://almuhja.com/ckfinder/userfiles/files/xesotewimuwidi.pdf
    • http://ck-tct.ru/userfiles/file/jojoxebofevok.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d056899967---47418147068.pdf
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b5c3a89d66---13647538200.pdf
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a803076498b---nojemo.pdf
    • http://thehigh86.com/clients/13680/File/liriwopomajurenevites.pdf
    • http://tencanpowder.com/d/files/58765175135.pdf
    • http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/ridujezaleradomivapemom.pdf
    • https://journeywithmypet.com/ckfinder/userfiles/files/pexudarurefinep.pdf
    • http://dzbnf.com/upload/file///62332322398.pdf
    • http://cwesp.biz/upload/file/fixikuvoduja.pdf
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/4a15e0930955d2bb6255d883cab59691/zilotosudoja.pdf
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109207f4a3c7---20929663733.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=how+do+i+get+amazon+prime+video+on+my+tv
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd7b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7B 16792 bytes
font_01_sfnt_off0001158d.bin
b5aa75249d2eb21e2a90ba95657b4550838476ce68dff8eae5c55798c4da540e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1158D 17280 bytes
font_02_sfnt_off0001427c.bin
ea3696b542d9ee8b036cf598646c44712098bdfd7e7f5801d35dcc101e0e0f39
pdf-font-stream PDF embedded font (sfnt) at offset 0x1427C 10840 bytes