Malicious PDF — malware analysis report

Static analysis result for SHA-256 41071291324c0404…

MALICIOUS

PDF

64.5 KB Created: 2020-11-14 21:03:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 305c1a75e9da5470f9ab3eb30acd9ef1 SHA-1: b33647fe320440883f4b5a9ba70bb7a24a6ccc60 SHA-256: 41071291324c0404d67e0a68c06843073e7dde2f3ae262f2d8d11c821cf9cfd6
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/123?utm_term=area+code+310+location+usa'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The document body, though heavily obfuscated, contains strings related to location and application metadata, suggesting a lure document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ggtraff.ru/123?utm_term=area+code+310+location+usa In PDF document text
    • https://vodoxakitukep.weebly.com/uploads/1/3/4/3/134335140/90f4a9b.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/1814063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393626/normal_5f9816db50376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_5fad51d4c5daf.pdfIn PDF document text
    • https://zijubanefim.weebly.com/uploads/1/3/4/3/134349059/golikuve_tuwozud.pdfIn PDF document text
    • https://kirugivedipabaw.weebly.com/uploads/1/3/4/4/134464293/e9d8f1f1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f893dff6e428.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/9de608ac-afbc-44ad-b96c-4123cf92ac0f/je_suis_blanc_de_peau_paroles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112a2a93-22c2-4ed8-8292-043eb60f0bb7/calendario_escolar_2019_angola.pdfIn PDF document text
    • https://s3.amazonaws.com/kidugodofunose/centurylink_email_login_email.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_off0000bffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFFC 5280 bytes
SHA-256: 21ecb3fe1f7f783b71e2598ea101af956e82cb0c7f8a68b9456ba8582166ab2a
font_01_sfnt_off0000d1fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FC 10492 bytes
SHA-256: 24fc514c2d5cf1e42184678498f9ea3e32aeec5a46ad87c12f8fcfe5e449acbd