Malicious PDF — malware analysis report

Static analysis result for SHA-256 54318d6ebecadd39…

MALICIOUS

PDF

74.5 KB Created: 2021-06-26 23:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7b2fbbc044f53f861978e36bbacfd21b SHA-1: e38c70e40179794462c88b056ac555d758bc57ba SHA-256: 54318d6ebecadd39e581071573292014cfbf76b96f310b0820c88d4b38b1b08c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of these links suggests an attempt to lure users into downloading or accessing malicious files, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160788e2cc0de3---ximewarimireluma.pdf
    • http://soles2walk.cz/data/file/77494867053.pdf
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/b72a0206a826f2a7ac995aebf9c1cfe4/lisufabate.pdf
    • http://enjoyisagenix.com/ckfinder/userfiles/files/87649610563.pdf
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/cc113766afc44651fc0ca685b180cca6/73155493220.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3aab140bf---10972828366.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c45bccb20c9---zebajopimiba.pdf
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16097a8bc27b8b---43383891635.pdf
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb31df588---17381524007.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc31c91639---40091193986.pdf
    • http://biotledlight.com/userfiles/file///29889313246.pdf
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c581c660dd8---diwuvip.pdf
    • http://agiusfuneraldirectors.com/files/file/xitebati.pdf
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/115b868d260677e9f9610577f29f7bba/80727375286.pdf
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/8c1395fd9dca77acaf64d6716a8c5b12/51921100762.pdf
    • http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815ef5745e1---31382937595.pdf
    • http://garderoba.sk/images/_file/tuvakopogonebatiz.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a69d40e48c0---94374896106.pdf
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160848f5e927b7---depuxujutenewogesulenono.pdf
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ada931e315d---99027760223.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608926d3475fc---72583487797.pdf
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0f13b5e3f---minirugekajok.pdf
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d2387d95---73720291422.pdf
    • http://flooroverstock.com/admin/userfiles/file/91733745272.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=management+science+mcqs+with+answers
    • 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_off0000c2c3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C3 16792 bytes
font_01_sfnt_off0000dada.bin
28f4cd3bc8f0b7ad37facac1a4b7f48971b5cc06655c56d68bd3867c7dc3e556		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDADA 10736 bytes
font_02_sfnt_off0000f30d.bin
184c08452589e77edcbccc27bb41086da52f8f0b454ebfef30932373c064650a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF30D 16272 bytes

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