Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ee01dc32614824…

MALICIOUS

PDF

84.4 KB Created: 2021-07-09 02:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1ba159f9dc43da23729bf79ac8538031 SHA-1: 65365b8bad907590fc1a352f81f446e3ef9e4641 SHA-256: d2ee01dc32614824e4894bdbe10fea15735686a3196a11377bb14062e21033ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055 Process Injection

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious files or redirect users. The presence of multiple unknown URLs associated with these compromised sites reinforces the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/uehapkdtj230pktp0ug134u9so/vetadepalasodi.pdf
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160780c927b1f6---gufawodokazixivirilogixe.pdf
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/1a25169bcd824763c59b965588a72ee1/78001604617.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/94e9fc8a72dac5001ae7174ef7549e54/61003947864.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a437d10affd---vujomewaba.pdf
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16085a071520ca---zavaw.pdf
    • http://ampletrekking.com/userfiles/file/76157841795.pdf
    • http://skupka23.ru/upload/m/38245627350.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/817925a3f26fa3dca20fd4a3bc15eba1/lazufokafodine.pdf
    • https://beaszemin.com/files/57805598365.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a087d0941---46770315254.pdf
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/5e01ab018d2ba2b10b7e7ec4931a9938/gitojuv.pdf
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/28def998e0e8ea8ecbeba5296fb42496/tepaler.pdf
    • http://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/59497945808.pdf
    • http://statewideroofservices.com/clients/b/b8/b825a24af54c157c196cf52173d75bf0/File/92847254910.pdf
    • http://asbazainville.org/userfiles/file/jaxunizelutoda.pdf
    • https://amd-export.com/site/upload/file/buzedixesizufux.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc0ec5ba53c---97434172484.pdf
    • http://vickerycarpet.com/uploads/images//files/19705477004.pdf
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160de8c58910b6---mozevasejuwavuxusib.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/78f249f78b489d9b0074fa9a37f193c7/sozejigober.pdf
    • http://csc0512.com/userfiles/file/20210607125133_9uudy4.pdf
    • http://ajtoablakcentrum.com/_user/file/dinojux.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5beb684529---govemirupapuvo.pdf
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/hc23hotpgsvgtc5khgj86dc2lm/87511374700.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=the+prioress+and+the+wife+of+bath
    • 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_off0000e6f9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 16792 bytes
font_01_sfnt_off0000ff0b.bin
e54dacb5b5aa816cf94fa72d991f9f685e5565cc0df63d753a1703fd8743d555
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0B 16984 bytes
font_02_sfnt_off00012b5e.bin
30d889df0c29e907934dcd55e959c3a56e7e1f4f81fc085ab2b1e243c700bfaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B5E 10736 bytes