Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d722498d4fc541…

MALICIOUS

PDF

99.0 KB Created: 2021-07-03 04:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 64b6a16b74af0258ebc3abaaca2e9c57 SHA-1: 7e68196a6bb7429379d5be5a69c2be6b64587aa5 SHA-256: 62d722498d4fc54114ab7b5dbec98ea5acccd82ae1ae8e1a7dc8d26890900a41
156 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites and other PDF files, indicating a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a common distribution method.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97791f0fb3---70170638260.pdf
    • http://czytamzezrozumieniem.pl/userfiles/file/29472060632.pdf
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/xakofokesofoniv.pdf
    • http://opakowania-loga.pl/zdjecia/fotki/file/tiburidulakemaguwizeg.pdf
    • http://novichiha.ru/pic/file/bovorebaviridosiparad.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f528ac50ec---vexunozifuvubonaf.pdf
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c37f65272---losulejemedagud.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/d536dfa800ea25677ac353a9cdc3af1a/fabimaxebeb.pdf
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/751461cc8c6b443b99280ddaa29612b9/pibutodogimugokugupopeg.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076b7a8b208f---lebituxutidiwukoliwuzole.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1d5b46304---10013290131.pdf
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972a2d567a8---ribasiz.pdf
    • https://paklya.su/design/img/upload/file/60826593404.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/459a5d222c9b01a42c99059df4113597/zowuxenes.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099908fd0e12---84826318437.pdf
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c551b7e45b8---sonerikir.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/rbki53hvjtd5c882epci69ecb4/vedufefadesekivowelen.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16075ab97a1313---86919046466.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/ca210d1db93cb84b77b985968ee9972c/ludavodar.pdf
    • http://slsnn.ru/content/file/97796057307.pdf
    • http://mousike.it/img_ins/files/77663798038.pdf
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/n2u9g1icjlbptjlgsvlb12tr07/xetovewokivixuwasib.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=time+delay+in+detection+and+relaying+of+epirb+transmission+in+global+mode
    • 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_off00012103.bin
3466aea16bbf19eba7474d606dbf11380301c72fef462e3b936285c847beea83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12103 16556 bytes
font_01_sfnt_off00014c43.bin
c0f6c5270e1efdf775c2ef82bfa61c74fe6924692cd133e58cce572120941a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C43 11180 bytes
font_02_sfnt_off000165fb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x165FB 16792 bytes

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