Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6f232ff404bb61…

MALICIOUS

PDF

83.7 KB Created: 2020-12-27 20:26:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9b353315841d300b725dcad02f63212d SHA-1: 17375220fa97439877df0fcecb6d5ebf36730e83 SHA-256: 0d6f232ff404bb618a25866f4f7daabdd0cdc2f6bb3dac6a0563ebcc3addbb47
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 hosting, and one specific URL that appears to be a redirector for tracking or malicious purposes. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links within a small PDF, suggesting it's designed to drive traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/strik?utm_term=rarest+pokemon+card+in+the+world%253F PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5fbae01b2ba13.pdfIn PDF document text
    • https://xisiwazebisa.weebly.com/uploads/1/3/4/7/134758569/janef-bibalozavupoja-xabiri-rolovasuneze.pdfIn PDF document text
    • https://cdn.sqhk.co/wediximewoza/MByjghj/12030632160.pdfIn PDF document text
    • https://fizakisel.weebly.com/uploads/1/3/4/4/134402115/xular.pdfIn PDF document text
    • https://meporolokiso.weebly.com/uploads/1/3/2/6/132681401/jemapene-pajemopiw-tenorunep.pdfIn PDF document text
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/237228.pdfIn PDF document text
    • https://tofigota.weebly.com/uploads/1/3/0/7/130775321/sunobujilonarijupake.pdfIn PDF document text
    • https://cdn.sqhk.co/rosafipex/phgkwih/24000611032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450721/normal_5fa4facb14d95.pdfIn PDF document text
    • https://nevofegef.weebly.com/uploads/1/3/4/8/134851200/tolejaxoragulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/11db4ffc-7a38-4bbc-8874-bfb194777ef2/besaxok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689e0665-7f34-4042-9de6-d3e9c0e92ae7/69756429787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2f78955-a70b-41dc-ac1e-188b7ca79898/tefapumarodepikori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dff2f76-3c48-44d7-be3d-ebd55bf68804/85419044758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e675e401-006d-4b15-beab-f10cc700f45c/podibebewugajatomakozewiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b511eaa5-4a47-4bcb-96e1-3f186edaa628/ligodifox.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADB 2960 bytes
SHA-256: d8ef148c594adba1946aa7d95f188f3f33f69c77bc22762a1a4a57bcfd89a796
font_01_sfnt_off0000e55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55D 5620 bytes
SHA-256: bc9260cd670a0ed33d1ed21bbfb9642bcf05bed31aa166b328248d35ac85597b
font_02_sfnt_off0000f85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85D 15896 bytes
SHA-256: 96cb3a437c18cf1e8f09b613471df5e0d8bac3536f188df2a68bc657309b1b36
font_03_sfnt_off000129bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129BC 16876 bytes
SHA-256: a80ef9e1de66d79b2ac682f16e5a32e48a4c738d9c7897c4d2ec653101f5ce56