Malicious PDF — malware analysis report

Static analysis result for SHA-256 096047e574d52598…

MALICIOUS

PDF

79.1 KB Created: 2021-07-16 02:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2a0fbc56013f8ebad58fdbdfebaf434d SHA-1: 159356833fd8f07b35ecde9828b866f3dde477eb SHA-256: 096047e574d525983259951f62cd01a7113e23bfc2cc05745393bbd27497df72
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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=power+of+love+by+celine+dion+mp3+download
    • http://capmar.eu/userfiles/file/30816288904.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608441ff3152a---sufefi.pdf
    • http://aven.su/userfiles/file/13198376546.pdf
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818cdc16dbf---6896358576.pdf
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebb60ab58a---kupovesexovadepako.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087d96490327---bumovowa.pdf
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/cc825f5208732af2800eb63f87a5ea42/76876854530.pdf
    • http://aftckwt.com/uploads/file/nudufexofovepekoxaxanusi.pdf
    • http://harchovyk.com/userfiles/file/jobofebugajiluzu.pdf
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755408403d8---81849562432.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779b770d8c5---52260807894.pdf
    • https://riondene.ch/img/uploads/file/96358850117.pdf
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/er0fspcvl90hgm7ss2is9qd9o7/56467349423.pdf
    • https://mygo.com/ckfinder/userfiles/files/60760825571.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608397609fa9f---geludowewixibusowopak.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ae6b8d1e8c48c09182a8478418256c9d/kexizavukulugidanev.pdf
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c318d108c71---51877888795.pdf
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075bf3a9c57c---vasilimilizisa.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/v402qnbkr76oj9oqviu414u690/digiwefufa.pdf
    • http://elementsgogreen.com/userfiles/file/debijawipirikiwovilerob.pdf
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c975e1cb625---vetibetil.pdf
    • 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_off0000cb59.bin
8add574a9acf8ddc78b329a70a9be55ea12318c22cdb21d5478456182868b275
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB59 11096 bytes
font_01_sfnt_off0000e508.bin
284d2f7bc0f29aa88964bb43bb360f2b538748f41354918bc3e4b9acb64b03d5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE508 19140 bytes
font_02_sfnt_off00011517.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11517 16792 bytes