Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb9bcb8aa6e229f8…

MALICIOUS

PDF

94.6 KB Created: 2021-04-08 03:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 86e4fb98ecc317b3080949a967846a92 SHA-1: 1e4abc6b661e57d0dc6dedf978ff38ef398c8503 SHA-256: cb9bcb8aa6e229f8f266e923a32d28128afb1ae668f767acbd3ca053582bf2bb
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The presence of 'gods of the fall pdf download free' in the document body and associated URLs indicates a lure to download content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://soxebez.ru/wix?keyword=gods+of+the+fall+pdf+download+free PDF link annotation
    • https://fobulosarurek.weebly.com/uploads/1/3/3/9/133997379/dovoxaledulo.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/applied_multivariate_statistical_analysis_wolfgang.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/chfAjfV/2862259922.pdfIn PDF document text
    • http://com-servers.online/981175792367mfoq.pdfIn PDF document text
    • http://gnoogle.site/tenozasikpslw9.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/gLdushh/42306565639.pdfIn PDF document text
    • http://zuzavepojul.mygamesonline.org/60486945034.pdfIn PDF document text
    • http://tututot.mygamesonline.org/kingdom_of_god_in_the_old_testament.pdfIn PDF document text
    • https://jetizapu.weebly.com/uploads/1/3/4/3/134371104/4525765.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/iehficP/carrier_services_miami.pdfIn PDF document text
    • https://lerexujirizafet.weebly.com/uploads/1/3/4/3/134344290/xoxujozexezan.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/gFgcjaO/govaji.pdfIn PDF document text
    • https://samaruwopag.weebly.com/uploads/1/3/0/7/130738554/fixuneluw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lawakux/how_to_knit_a_hoodie.pdfIn PDF document text
    • https://0f3c41ac-de96-4ba7-a517-026d7435d592.filesusr.com/ugd/8631de_00e65aee1d6e44b3bfb2f740453cf83f.pdf?index=trueIn PDF document text
    • http://xepatodop.onlinewebshop.net/lumizurus.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/gijozatasefazunitusi.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/bole_chudiya_song_mr_jatt.pdfIn PDF document text
    • https://13adc596-845f-4f4a-b539-e2c04a0a4b5a.filesusr.com/ugd/6e2da7_33f76ee0c592435b86fe5698f9fc03ab.pdf?index=trueIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_7570aa0547ae4ecfbc59c639ff53d043.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/whirlpool_accubake_self_cleaning_gas_oven_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/xunulebi.pdfIn PDF document text
    • http://powagamojij.onlinewebshop.net/gexizalipewetidekipejo.pdfIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_9141a249e53e4b1c9dd26d93c1218644.pdf?index=trueIn PDF document text
    • https://438c9214-13ba-44a2-8469-a4c97ff43377.filesusr.com/ugd/5d46a0_863194b51d594ef2be4d5f0e0d79ffd7.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13028 5252 bytes
SHA-256: 583308acc84a2776335d502cefd6f58d50fc9641e788e35eaf7fb1cf7aef8949
font_01_sfnt_off00014213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14213 12136 bytes
SHA-256: 2839f18286b4c5c985a63bbf2233e0e4078badcecac82a5ed73430c5ee2caa24