Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57762f8f4c62d6f…

MALICIOUS

PDF

79.7 KB Created: 2021-06-14 19:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f0b7c01e444d4cc85aecf14de099cbdf SHA-1: 28c2c99f1e2a0665a2eed5e9f5915b32b9a46fd2 SHA-256: c57762f8f4c62d6f1750c8a54d1783655e2e1d1b2978bf5873e16e303d52e2aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan attempt. It contains numerous links, many hosted on compromised WordPress sites, directing users to external URLs. The document body, though heavily obfuscated, suggests a lure related to 'Ben Carson full movie', likely to trick users into visiting these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7074

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://crewmak.ru/uplcv?utm_term=ben+carson+full+movie PDF link annotation
    • https://brickbodysupplements.com/newerac2c/userfiles/file/zolodowizoz.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/85186135894.pdfIn PDF document text
    • http://albino-pitti.com/pub_img/file/76504084550.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/8e4852b32baf6aa77d810f71f6eb3eb1/ludafis.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/8aq5hgouefsl2k1sgs556b1ou7/nosobamuperubaluto.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcdfb22343---komivemenusosu.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/3p8etnq541gohki4oabceahkr4/29002916464.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/c28bc30cb226f52390bdf698bc5711fb/tizobilonisisunuvurukis.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7f234099---47569170774.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/afb1667f8bd1678136e3167a60c77c27/joripozavotijop.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/l97fk4njn2aosvtevub7pl75gq/wetejobemosigevaluzema.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092430c50e93---gizamijepa.pdfIn PDF document text
    • http://juha.be/_files/file/21339752035.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/3a790fa92e57ba3644e36d99b61cd013/pojoxebisozagope.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1608010b76ff7c---70146820189.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/17cf27f38aa528fd27b8d0a9894e7f2b/juwetoruwizudedadolo.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/88fe8e3cdf19dc829a345d0109cdfcf0/wodabel.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/xununewunumejabazupum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10925 4940 bytes
SHA-256: a88e049560832e6f9f81198c93b7cff0cd7578e32fe68e4ca2ad17c2cac795a9
font_01_sfnt_off000119cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119CB 10484 bytes
SHA-256: 8593595510098a37ee6c9237162c4f1b7a6a05494e6a3133811e54588d1639bf

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