Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2b929993af0297…

MALICIOUS

PDF

87.3 KB Created: 2021-07-02 13:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: f2db8d3bc5a5d5ce8d506d765ed7633d SHA-1: bfe81af00164d0ad711593ef1f037b2dbbc8809f SHA-256: 0c2b929993af0297b592599438fea24a65917ab3c60101c711a5a4554656d3f1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution intent. It functions as a link farm, with numerous embedded URLs pointing to compromised websites that host further malicious PDF files. The primary goal appears to be directing users to these compromised sites, likely to deliver a second-stage payload or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://smidgel.ru/uplcv?utm_term=roms+for+nds4ios PDF link annotation
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac358d24cac---jasima.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/b20gbeu8foddb6fao9q6iuheq7/lonulunuzokuvanorav.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/detozizifuriwuz.pdfIn PDF document text
    • http://banghetretruc.com/media/ftp/file/tulipukeno.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/62a712c56a6535296e145d243cb69284/26420468523.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/b93d1a323f8952b97129c4ad60a96001/85514390821.pdfIn PDF document text
    • http://seabeachthailand.com/UserFiles/file/59344144333.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/14947142909.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/ec51cb23a4da747a2c6851ebf56282ea/14573572513.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/7jqk2juidnqf6lbchtd7ak5dq1/disopewuforolalakuju.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160759962069d4---gotobav.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/5gao1gqu4917auda00kue9g162/26622107225.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a29149136fa---kikogejudiluvaxovovovu.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c923f5e217---53043897318.pdfIn PDF document text
    • https://hoalavender.net/upload/files/wodeted.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/0ec713ffb4c500484fc71ee55c566702/jemasuposovakon.pdfIn PDF document text
    • http://quatanggiabao.com/images/uploads/files/bunerewopati.pdfIn PDF document text
    • http://waterreducer.cn/d/files/47508423444.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5818dcd1a---kobikavaxopaja.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/daboxinuralisatusizevoson.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/mp91et1464ip7g8q36nta1itv5/49785678607.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d241c119ea---jumalefojifoxujuremituri.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE639 28824 bytes
SHA-256: 0e6ab6b19be1358370274a25e4601c747b3f6fd52b95ccaadbc192731e0319b5
font_01_sfnt_off00011fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD7 10200 bytes
SHA-256: f7d3ad86abae5345f1e1c5f7fb0fd94190380729048dd09b36ba52bbcaa342fd
font_02_sfnt_off000136a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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