Malicious PDF — malware analysis report

Static analysis result for SHA-256 d922b697e67a1077…

MALICIOUS

PDF

85.4 KB Created: 2020-12-27 02:18:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 913aabfa1f296b845076ab2752628e44 SHA-1: 958fd3e84ff723b6e4e0254ee25e4d67561be58c SHA-256: d922b697e67a1077081e39b2b790228c4f4072fd36b4be8f966eff0aff4f4ad3
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://trafftec.ru/strik?utm_term=best+iq+test+for+autistic+child PDF link annotation
    • https://cdn.sqhk.co/lawafopugu/R6vgeii/pogidofiwuxazalu.pdfIn PDF document text
    • https://cdn.sqhk.co/dodirorip/hiMPFin/43424048375.pdfIn PDF document text
    • https://watorixaziju.weebly.com/uploads/1/3/4/5/134586039/japurexis.pdfIn PDF document text
    • https://cdn.sqhk.co/tesinogopano/gjChaid/swat_movie_cast_name.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/agiieii/subaru_wrx_youtube_ken_block.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/8gNNido/zexewiwulunajuza.pdfIn PDF document text
    • https://xisofapetuv.weebly.com/uploads/1/3/4/7/134747578/mirarojonomi.pdfIn PDF document text
    • https://lixemuvoxowogod.weebly.com/uploads/1/3/4/8/134878154/rorivujetaxe_wukuko_desusevozovijof.pdfIn PDF document text
    • https://cdn.sqhk.co/lilanoto/h54haA6/roxewikadoxivoke.pdfIn PDF document text
    • https://cdn.sqhk.co/siwemawatu/ig9aMvL/1682895602.pdfIn PDF document text
    • https://ligibodi.weebly.com/uploads/1/3/4/4/134469997/2981199.pdfIn PDF document text
    • https://cdn.sqhk.co/lunapolakezo/6ShgWhj/23599969195.pdfIn PDF document text
    • https://tujebikofo.weebly.com/uploads/1/3/4/3/134359874/ca0bfa.pdfIn PDF document text
    • https://sofusosixep.weebly.com/uploads/1/3/4/4/134493363/7dfcd9979b3d.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/hbieWic/2610562457.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/vifusupegiza/zuborevuwepolapajatakarus.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8C 5284 bytes
SHA-256: 8837012d9700255c670858fbbced33203ec0c8c388d6a5d10382de8036af57e5
font_01_sfnt_off0001207f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1207F 12004 bytes
SHA-256: e36d3b1451e9c8c37b151da2372c20399c9c0898b7cf53c3dca1848ba2a0fdc7

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