Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabe35945d69cc65…

MALICIOUS

PDF

87.5 KB Created: 2021-05-05 07:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 768cfd4ac395e7a3fc1f9c5e92327e53 SHA-1: 8d79bf1143e4fc8d4743ed7d1989305816e1e665 SHA-256: eabe35945d69cc657daf73f7040d8f9265ebca48dfe855b5ee7f7b25de2da517
154 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous URLs pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body is heavily obfuscated and likely contains further malicious content or redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8118

Heuristics 5

  • 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
  • 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://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/7a628241ab8cee0687d1de54cc5de320/dufimobo.pdf
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/2cd315fb6811fe866e96894f61a9c35c/xiwajogij.pdf
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/5630944ee062430eb7d539ebcb9c161f/pimazemewifipar.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ea2b1c551---15152372718.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/nqgedgc2s4rot8iji3ifrq1n51/12393826822.pdf
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce84f2d3c6---18507065968.pdf
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608461a7a01f9---40286545236.pdf
    • https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/f5u02k6ug4vurj4egtt2342tpl/rodavanafikevosanefuzeni.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c62a752415---91766491984.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0b08aeb07---18174179337.pdf
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/5qd73r7ls9o59ojr85tbcaql8u/vasudorisokuzaxijekijavex.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607b660435b27---91044298163.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6febda480---15345772011.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608179b8e0a66---71236894833.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755f24a8a71---196195555.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077853400eb8---jolugizoxepivaxerawe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=baez+injury+report
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001287b.bin
7b00bb34e2e3ffb3557615e529767e05d26ced9802f7b77bc7cc08868ff810ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1287B 4880 bytes
font_01_sfnt_off0001393e.bin
690858c7bb271f1ed6a3de2132134ed289563273869938be53f5a59cd0274484		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1393E 12160 bytes

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