Malicious PDF — malware analysis report

Static analysis result for SHA-256 64476fc94991506e…

MALICIOUS

PDF

71.3 KB Created: 2021-01-14 23:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b41ab96a595a6bda89d9047135ade7a0 SHA-1: 7452998c3ff81af7f0d74886bec6160c23ba41b4 SHA-256: 64476fc94991506eebeaae39870f87c2924ebd9d8c6d3c3486888f5782077f17
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical alert for a malicious redirector link to 'traffine.ru'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to lure users to a compromised site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/aws?utm_term=cheat+sheet+tft+scarra In PDF document text
    • https://site-1180710.mozfiles.com/files/1180710/tuforuzolutew.pdfIn PDF document text
    • https://cdn.sqhk.co/pibegufuxova/hhsCm3W/bomb_defused_csgo.pdfIn PDF document text
    • https://site-1167925.mozfiles.com/files/1167925/dedumeladeraj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444649/normal_5fec519b197c4.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/xivilosiguvukuj_mogesebal_kepitasumupis.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxinugokas/w7qhiie/amazon_prime_video_movies_free.pdfIn PDF document text
    • https://ginufadep.weebly.com/uploads/1/3/4/6/134668932/153204df7.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/xumakomowi/tapikudotezu.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/vopurimilupudakajeb.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/empire_shopify_theme.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_off0000da6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6A 4840 bytes
SHA-256: 30c5cdb817d6b77a361d3f42386bbe5b4aec111266da2590e5b4a4525702ab87
font_01_sfnt_off0000ead5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD5 11076 bytes
SHA-256: 529c32c6eef5d512620d89bd80a4cfd70106d704258b0e3984fb9312d1f600dc

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