Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e9aa12e5201545f…

MALICIOUS

PDF

84.9 KB Created: 2021-09-05 02:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5645118fedd05cdd49933e73d83b7785 SHA-1: eb7f1e3159f16734fe3331ba7838b0c09091f582 SHA-256: 1e9aa12e5201545f143bc05b683b5f9b4f4fbea0b05d6566f6da1bc0fe00ba47
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. The document functions as a link farm, containing numerous URLs pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting. The primary purpose appears to be redirecting users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://campermagazine.tv/public/file/46436825604.pdf
    • http://kronospan-mofa.hu/editor_up/nerolurudajizoz.pdf
    • https://totalmediasolutions.ae/ckfinder/userfiles/files/42744243152.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0f31f422b---60210458635.pdf
    • http://curry-box-deluxe.de/userfiles/file/13877033903.pdf
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160e7e4880fbf8---79225707195.pdf
    • http://cautrucpalang.vn/webroot/img/files/kufunewunatil.pdf
    • http://dobrasekacka.cz/userfiles/file/ketakuzizosifapim.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16133f44e27a2a---83069244572.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086eb8bef9fc---61787168460.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/jgbn30i12pdjvt6tg5j1ig4os5/52313464768.pdf
    • https://mygoaltv.org/ipp/images/uploads/files/85326658272.pdf
    • http://fc-junajted.com/upload/datoteke/53563584456.pdf
    • http://grafichesirio.com/userfiles/files/64485984210.pdf
    • http://cuatro-pr.org/sites/default/files/file/zulerivapes.pdf
    • http://tunglamgarden.com/images/fck/file/nigujov.pdf
    • http://bscsaoner.in/ckfinder/userfiles/files/22533027488.pdf
    • http://peaceinsrilanka.lk/userfiles/file/90788379114.pdf
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160afe05c787be---34854912584.pdf
    • https://suma.ca/upload/editor/file/fadakuzelovesuxe.pdf
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/kg0q4lj0mu0lr54rpkvmj4g1iv/56358000055.pdf
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/fewaneripudufegep.pdf
    • http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c636dc1bcf5---73601992568.pdf
    • http://alimentosldm.com/userfiles/file/sadolomiterevoja.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=wizard+of+oz+graphic+novel+pdf
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/004383ee6acf44813db16d5c4e578bf1/gerejafagupitesis.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_off0000e74a.bin
672963f6b3ebd37e6d030ea44ca71bbc0c9cfc1326b3cb9ed104fe5e8c1afb48
pdf-font-stream PDF embedded font (sfnt) at offset 0xE74A 10752 bytes
font_01_sfnt_off0000ffc9.bin
c7b4fa900e0f0c6d2ae7824d9e9eb1cb3f397de9e3816e60b4520d2d94cd6710
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 17780 bytes
font_02_sfnt_off00012d9c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D9C 16792 bytes