Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b61837a2a8b137…

MALICIOUS

PDF

100.4 KB Created: 2021-08-19 11:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 0df326473099661e4599bb97057f1155 SHA-1: ac3dd442981c700e0a3ce163bd53ade54b4ed2d7 SHA-256: 74b61837a2a8b1371c87fa1a8f801becbf0f884fc64110ba9afdd96d51681356
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, specifically as a phishing trojan. It contains a link farm with numerous URLs, many hosted on compromised or disposable domains, designed to redirect users. The primary attack pattern involves luring victims through these links, likely to phishing pages or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://archism.ru/uplcv?utm_term=adobe+photoshop+classroom+in+a+book+%282020+release%29+1st+edition PDF link annotation
    • https://fetogram.ir/images/upload/files/52088423495.pdfIn PDF document text
    • http://tochuchoinghi.org/files/59642981260.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/wurofezuzabumo.pdfIn PDF document text
    • http://faptvmedia.com/userfiles/file/92683501679.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/52pu43mnoojrskbp14per2lcu0/28635549411.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/davelizemosanuzifudarozon.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/44870865394.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/cqo9e3i4be5n90aefrvffkr4mv/tomizam.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/90408649165.pdfIn PDF document text
    • http://getem.pl/files/file/wozigefonakizifinovone.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/84624288858.pdfIn PDF document text
    • http://gistfamilyreunion.com/clients/8/8c/8cbf0a40baaab9dd4734ff2cdbb1e120/File/77392797914.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f92db135099---36138722494.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/vutalino.pdfIn PDF document text
    • https://tangentemag.com/img/file/savevajafokaxenigasebatu.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/k100fmbvhshi0f8ul6ossnf1o6/54155820546.pdfIn PDF document text
    • http://garmagostaran.com/Upload/file/82804449110.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/2himo83ikctoaiqghu5pi05jf6/fanumisivagutip.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/tewomadanalivajizinakiluz.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/mulanokakalot.pdfIn PDF document text
    • http://kibbkw.com/uploads/files/nejosezeregerolareja.pdfIn PDF document text
    • http://vinmexindia.com/uploads/ludexob.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11347 11444 bytes
SHA-256: c05c04290994d9caab6bc7de1cb3fe92f73a00f5224a126d7bec340802bfaacf
font_01_sfnt_off00012e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E14 3432 bytes
SHA-256: 4fe02f39b4e66b99f7ff0b0f7732547b1eb93cfa28431e1f39da5edfdf3f3e76
font_02_sfnt_off00013c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C19 17648 bytes
SHA-256: d7fd6051e1afe46d5c219e73d1a33cdc0f25b06061b012202bd506093f9a9edf
font_03_sfnt_off00016a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A66 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.