Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2876cb7a2fd09d3…

MALICIOUS

PDF

85.7 KB Created: 2021-07-04 12:43:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 95699ef9206a85d3351c7964b281c197 SHA-1: 8d485864811dcf4b9aba44e353c628e941b748da SHA-256: f2876cb7a2fd09d313a58722a92a6e63d65abbd1ced3ff29f697e6225b8e7092
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to various PDF files hosted on potentially compromised or disposable domains, suggesting an attempt to distribute further malicious content. The 'Password-protected archive lure' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade initial security scans.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://all-pass.com/folder/editor/file/53080863753.pdf In PDF document text
    • http://phamtrangia.com/upload/files/rotixidizavagiwexa.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/1a623de2c4f55c634be6224e3bafb85b/bolitexonedimedezuf.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/r4o6t270pdd9ki2rhkavgilsi0/tegesaxeviriborosad.pdfIn PDF document text
    • http://slsnn.ru/content/file/18626776189.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/rotenakuwidaxu.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/6so0e4e3lsanp2bn2sg9jsg1d7/91334708486.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/f01f54d0a417791d9956027f2d7eb4e1/nifim.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/j2ftnaetkks5608ocmgkvs3f12/bivawapamenesafig.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b54c726a142---gogumigulebiwanonunevodal.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/8d74d9b5dc362ccc8d28aa3ae96eedc1/99280785671.pdfIn PDF document text
    • http://exima.kr/userData/board/file/lilimakodejujobixu.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16096a50ceecc1---rujivezuwobesunezakom.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160748058c12e8---xufisopat.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/3i8o54jj84lp3nf34r8hjl7cf6/zivibipajatezexejifuvimo.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095c4d01cfe1---disogovazedinizapala.pdfIn PDF document text
    • http://huntland.hu/upload/file/pozuroduzokozodepugu.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/f651e2529a78d44f385737ecc211f731/93692038757.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/59048801631.pdfIn PDF document text
    • https://nepalipublisher.com/ckfinder/userfiles/files/zexegipav.pdfIn PDF document text
    • http://thevisionkharj.com/userfiles/files/93407742981.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/23816257092.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/cd99fc47d2f078acb27e2d59d95a8707/sedofoxizomubivuzatewov.pdfIn PDF document text
    • https://ecoretras.com/file/woxesafutapezeputij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=html+to+pdf+converter+freeware+software+downloadPDF link annotation
    • 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_off0000ea91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA91 10832 bytes
SHA-256: c117fbcb0f927ddeeaec1d08c8e6cc08fb1680554120af05d9426343920253dd
font_01_sfnt_off0001039c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BAE 17276 bytes
SHA-256: 68f207a2f06c73128ce84cf4828dd3addcace1a6a7c44324101dc18a74785e99

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