Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a238b6cc6317f9b…

MALICIOUS

PDF

68.7 KB Created: 2021-01-14 15:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 07fd0363c664af82478ece29223cd8dc SHA-1: 2dbe1beefaf881d79abf17c8cb818a23556aa2ef SHA-256: 0a238b6cc6317f9b9147e3d72b80ce6f9a637ae6db999463c5213a429bc9e7e4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://traffking.ru/123?utm_term=blue%2527s+clues+tickety+tock+game', is particularly suspicious and likely leads to malicious content or a phishing page. No scripts were extracted, but the PDF structure and link farm heuristic indicate a malicious intent to redirect users.

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://traffking.ru/123?utm_term=blue%2527s+clues+tickety+tock+game PDF link annotation
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/sabevob_rogozazofop.pdfIn PDF document text
    • https://site-1167928.mozfiles.com/files/1167928/nurefekeza.pdfIn PDF document text
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/1734339.pdfIn PDF document text
    • https://dudepemak.weebly.com/uploads/1/3/4/7/134702006/5495547.pdfIn PDF document text
    • https://jawokipuroz.weebly.com/uploads/1/3/4/2/134265350/metixomosaloz.pdfIn PDF document text
    • https://xurafexejigaf.weebly.com/uploads/1/3/4/5/134588012/c1dfa9dd49.pdfIn PDF document text
    • https://tojopuxibo.weebly.com/uploads/1/3/4/2/134265943/a1cf20d0.pdfIn PDF document text
    • https://ramemegu.weebly.com/uploads/1/3/1/3/131383760/bemurawunef.pdfIn PDF document text
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/bajopipifufalej.pdfIn PDF document text
    • https://duvupobilalef.weebly.com/uploads/1/3/4/6/134630448/6b2bfed1f93d.pdfIn PDF document text
    • https://xiridibokolu.weebly.com/uploads/1/3/1/3/131379099/8972955.pdfIn PDF document text
    • https://sorafenime.weebly.com/uploads/1/3/4/3/134320910/cc186.pdfIn PDF document text
    • https://jibajupo.weebly.com/uploads/1/3/1/6/131636806/65e844a9a138013.pdfIn PDF document text
    • https://site-1172287.mozfiles.com/files/1172287/rigenekaxitopuzugilusin.pdfIn PDF document text
    • https://roxunasof.weebly.com/uploads/1/3/4/3/134312726/bd3f6.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/wolina/annotating_with_apple_pencil.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02C 5272 bytes
SHA-256: 0ed97d90ece1abce4fcbb7b020532e2e7f1fdbb661fca5f7585c2bad4a8298d7
font_01_sfnt_off0000e229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE229 10484 bytes
SHA-256: 8e8da93f6a8706bf816fe350c982cab15c51e2b236fbfea6c833e004f6d36615

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