Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38547cd117a6dcb…

MALICIOUS

PDF

67.1 KB Created: 2020-11-20 13:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 22098d0c65e0731bff80d3b790e10794 SHA-1: b4104c6cca2d695e8b018bf28bf6ef842ce8004a SHA-256: f38547cd117a6dcba0dc9b57f891ede19a86bebe765e05e22f073e483bcc3124
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. This URL is likely used to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL suggests an attempt to deliver a payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=lord+of+the+rings+middle+earth+2+tor In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f88a764c92eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87b17550a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_5fad26c4b9e46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379482/normal_5fb5c084557c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f9f6aac261a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_5fa0951835a59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_5faf8f71352f6.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/mozirolinitaje/86535628109.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/36554251895.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/3130138851.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/ddo_quest_level_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/24925167232.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/puwovagupexinegudugipa.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_off0000c8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EF 5396 bytes
SHA-256: 9ae5568416e19abd49e1ef854c7251f98b51a656fb6c8afbfd5b89edb62c7acd
font_01_sfnt_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 10656 bytes
SHA-256: 0901f80a8317cd4dd7bff620ed3c8e3424a39f2faaf0cf544acb30cf43f9b333