Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a191ba980653963…

MALICIOUS

PDF

380.6 KB Created: 2021-06-30 07:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7f7d51a741e848ae38878dcfcf55cf3e SHA-1: 931803e2fe99fe8b25963466b9a7253459758743 SHA-256: 8a191ba980653963a515ffa02accde69f806d2186a4955da96b9d2b62a24eccc
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress sites, suggesting an attempt to host and distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8665

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/ff5f7ac97ddaa7cc94fbc6687e779ec0/vegamolabufi.pdf
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf58dba4528---dilerelepebo.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/d031b588a15037e95f42a7b2652b2fcf/79452038844.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609617fe190c3---69051907676.pdf
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/395oq0l1ijkk2ppl0t43q9g7n7/55261164086.pdf
    • http://ebanksunited.com/clients/7/7d/7da19d52c1086e69e61582739ce98a0f/File/23271230327.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c578042644f---8709479700.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/00add847fb497bcddbc958471c2c3120/73785305157.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/13c47990c2e94e3b086c39844550aa85/94786346502.pdf
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160943ad23d5c2---57831172243.pdf
    • http://biometria.pl/photos_fck/file/56210550602.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160dbb699c1345---87660416337.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c2cc8e75ff9---77271328809.pdf
    • http://ferramentabelleggia.it/public/file/2811020489.pdf
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/2967731a52db7281120aa9db781a1392/39456260638.pdf
    • http://ascensionchina.com/userfiles/file/mazozomawuxufefogexuxe.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/9a2d2d74264ddb46a1a226c5e597f5a0/80885326578.pdf
    • http://szakkepzosiklos.hu/upload/file/jibedipidopalabamarapev.pdf
    • http://agt.es/files/galeria2/files/medepemujomudefumowimase.pdf
    • http://geredekombiservisi.com/userfiles/file/99294094438.pdf
    • https://telenovella-bg.com/files/tukabusalowamagepebiw.pdf
    • http://chataphan.com/file_media/file_image/file/lenoteliwidolosurufari.pdf
    • http://kstarsmall.net/userfiles/file///xedumumopebojujijokoti.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=zombie+college+the+5+rules+of+lab+safety+word+scramble+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_off00058167.bin
c3b7160f37da9d3ba83f310c5fd8938bdcd6c6ec6d4361c5f9f5b9072d935726
pdf-font-stream PDF embedded font (sfnt) at offset 0x58167 11460 bytes
font_01_sfnt_off00059c40.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x59C40 16792 bytes
font_02_sfnt_off0005b452.bin
bff79d7124f837c1f7ac227bdfe5e567b67e8b613c598a33e707526968838733
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B452 17708 bytes