Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0bbc54185b99b0…

MALICIOUS

PDF

73.6 KB Created: 2020-12-14 15:58:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 200db4e4d87cf3dfd8dfa0ea55be72c5 SHA-1: ef5eacfee050f3416e9ef68d176772f9c03f7c3c SHA-256: ff0bbc54185b99b075fb354152d3d4cde62f6c54202c30f92d89c80bb5e0c36f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. This URL is likely used to redirect users to a phishing page or download further malicious content. The ML classifier also strongly indicated maliciousness, and ClamAV detected it as a phishing trojan.

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://traffking.ru/aws?utm_term=march2success+asvab+study+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f88953ccabac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495244/normal_5fd61b9bbbf35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_5fa0546dc4a4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410443/normal_5fc6430e1fea6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408340/normal_5fcbf3f314fa9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459796/normal_5fa1b2daab4bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc51f70f7cf8c7540462545/t/5fcbb27b33fb14715cc15707/1607185020438/97076064517.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/nanukipavetofojomiguf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/989cc122-b162-4d56-be76-1092bff9b8d2/minekivope.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58302c6d9645836414f06/t/5fcbf71705ddc9599d0b0a40/1607202585585/pugezabipebafuruxanisexe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe049e9ee0f32b871a64f8/1606288546626/tabla_de_milimetro_a_pulgada.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36737bdb33045eed226b2/t/5fd1f13e0f163860c7b277ff/1607594303478/falling_inn_love_cast_names.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/92280737471.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_off0000e277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE277 5608 bytes
SHA-256: c08df72d4045cc5103bf2f49a53ea592da09cf038259e350bdad0123d33ba0e5
font_01_sfnt_off0000f5a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A1 10532 bytes
SHA-256: 7a26475dd4b5db21df27bc9c4fd74b1317ac1d17d7b679fde9bb81d05630a240

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