Malicious PDF — malware analysis report

Static analysis result for SHA-256 29071fc94ba4104b…

MALICIOUS

PDF

91.5 KB Created: 2021-06-28 10:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fbf206eb6fe84d679eb61149bd215871 SHA-1: ebb2d895b10fa67c7fe1a17ff526c9b3d06aa291 SHA-256: 29071fc94ba4104bcb9f6896d4d72cce50c2663db20a9e9c1aaca932211c3dc2
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, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://infrive.ru/uplcv?utm_term=get+settled+meaning PDF link annotation
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/65070dd81b37b5c6cd2b05d3a16ccb45/kudorogofigolizuwupobiga.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/e8h4eiclbst85cbfso0nu6mcrd/82107796478.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3c0794240---giwurutorujaku.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160b652943834d---mowejapigukujen.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a2f91cf67---77984796848.pdfIn PDF document text
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/wesirazepitifipegapevexug.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091d0027372f---72625730714.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/c38c7ac9fc41995c42ab6e19a49e4d01/wawowomolas.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cca73b53912---75678616708.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160784066d7ea3---bapovak.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16075e7f270a6d---givusi.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/597a1cd76da928d8921995c46f0e2534/gunofozafasitikuxekat.pdfIn PDF document text
    • http://matstravel.ru/userfiles/file/nimosigonalukufepijed.pdfIn PDF document text
    • https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/30650b36720ad906bb7cdd07e91d6186/juvokijefubilelaketoso.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/0b0ea0c64af5d3ed1378627fde4bc468/xipewefudogixofexusagog.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/s8sqofd9eqftr6j93r097b4vt1/sedigofekodovixalovozipel.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160999b3964169---bexidixudenojaforeke.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/2ce58607141ab9b46f50e3c38c5fb251/36990463582.pdfIn PDF document text
    • https://bisnismedsos.com/userfiles/file/bimetivobutijanap.pdfIn PDF document text
    • http://mppscstudy.com/admin/usercontent/file/bepajosef.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4f2166fe7---biwud.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/84587a20ac5e0760acb8a7a1c4b3113c/74917309212.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/99013374808.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16070301fe0b69---xivopuxagep.pdfIn PDF document text
    • https://confetti-seasons.ru/upload/files/kagunizosobazaxuku.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0A 10408 bytes
SHA-256: 2628f0b2f99d498ba9bee010800ef204ca28c511066cdd5b97e0e455965b8aaa
font_02_sfnt_off0001315c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1315C 18244 bytes
SHA-256: cf84a39464fd00da9f9a8de75eec0c42660cddd2fdd029205ea3d6e97908c42a

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