Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f52cc0158d0b8f…

MALICIOUS

PDF

72.8 KB Created: 2020-12-24 07:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 463f814645cb1e955a36584f033122cd SHA-1: 505cd191e53d7c50dde59e59f647bbdd3403acdb SHA-256: 74f52cc0158d0b8fadad3b9d2f5a1ba6e667b934c41295457d79a49a54d87e5d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The presence of a large number of external links suggests a link farm or phishing attempt, with one URL being trafficked for 'anime games apk free'. While no scripts were explicitly extracted, the PDF structure and heuristics point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/aws?utm_term=anime+games+apk+free PDF link annotation
    • https://cdn.sqhk.co/reserujaj/Sifijty/birdy_grey_dress_sizing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_5fc3458672abf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5f8de4a4e864c.pdfIn PDF document text
    • https://cdn.sqhk.co/xetasenuwoji/cI9jaVO/77971554276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499021/normal_5fb557927ae51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5fb3648847fb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380214/normal_5f91784221813.pdfIn PDF document text
    • https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/xufikodogi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5fa1f3966de01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_5f8ee0d0a423d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502268/normal_5fe38270a9f0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_5fa2de025b598.pdfIn PDF document text
    • https://dojudetokin.weebly.com/uploads/1/3/4/6/134613144/2823163.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/938bda5b-e22b-4a4e-85a1-fd8f3807d78c/dobufebakimakududo.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_off0000df7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7F 5244 bytes
SHA-256: 1a84e66937351ee66705a017ac63a1801f263018dc9c4b62355b07a054c3ad9b
font_01_sfnt_off0000f14b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14B 10904 bytes
SHA-256: 30c3122b8da5e6b8aec9727bd2927b50cc066401b40c17479762e6442fb98980

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