Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df7e07082f27109…

MALICIOUS

PDF

92.3 KB Created: 2021-08-28 23:35:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d8a02565b7d97ad8494acb795231f83d SHA-1: 3ac0e52871b65c5938d242ea8b9955e544bf40cb SHA-256: 3df7e07082f27109705571ffa6cd06c173534e9acb9936e0b3a56da74b33810e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised CMS uploads and disposable hosting. The primary URL, 'https://garglob.ru/uplcv?utm_term=high+rise+full+movie+free', suggests a lure for potentially pirated content, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://garglob.ru/uplcv?utm_term=high+rise+full+movie+free PDF link annotation
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e405e84a3---39925356678.pdfIn PDF document text
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/8ba80be514e3f855eeffb0f537f04d17/27081890866.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e0ec43f224---90691432847.pdfIn PDF document text
    • https://dichocungtoi.com/userfiles/file/tokorowuvaderigovovib.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16099f3ff4d06b---22538483036.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/wuzopudisifofuzekanexa.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/pelarixisuwonupiboned.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/336b42fd882e35db1f6f17b15ca9a525/90090601994.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aaf72deb48---kawakeju.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/d88ce2bc1830619d961506824ab6203c/31859430688.pdfIn PDF document text
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/godogepagerub.pdfIn PDF document text
    • https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/6801541130.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c88d932b6e---86893501619.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093c9d8a29ea---82281185886.pdfIn PDF document text
    • http://kojeneckezbozi.eu/userfiles/file/83566534708.pdfIn PDF document text
    • http://www.celso.org/download/24189610847.pdfIn PDF document text
    • https://equinox-e.com/upload/files/sakogigorifazisiwobu.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/e1637a0624dbcb4e1c2afeeb9885b7a3/86230900189.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-6/file/4637542855.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160fe3a56e27d3---79091698099.pdfIn PDF document text
    • http://interiorsexpress.biz/dayafter/uploadimages/newsimages/file/63073479148.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10696 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EAD 10452 bytes
SHA-256: 9183900e354299121131b6e1e359a309e5a75ccaa90df66d59ee0f5ee939e268
font_02_sfnt_off00013657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13657 17500 bytes
SHA-256: 9c6d8b45e00e991bfeabea1940eb3862ce41917d41e802b11d8b45a97f52494b

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