Malicious PDF — malware analysis report

Static analysis result for SHA-256 780caa1269f88c73…

MALICIOUS

PDF

66.2 KB Created: 2020-12-20 01:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f742191f7a434b8dfe9aa1e0c09d8641 SHA-1: d6e431785ea193b66597da98d6fb33ded70c6ae6 SHA-256: 780caa1269f88c7309ff21ccb18ea64777b4fc2ce71d4e31298c24b2580f08fd
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is likely used to host phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing or redirection attack.

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/strik?utm_term=hidden+pictures+printable+color In PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fc6d8a940041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411923/normal_5fa4f25ec13cd.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/9ce60e0a-e1ae-4572-ae27-256ae691ddb9/jubiserajorugoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/394091ba-ef91-4baf-8e42-bfd25e5a67f0/69810168697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a0a31e1-3eab-4e4f-aea7-949696a2c5eb/37164063661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afa72c4-071d-499d-ac79-c1390e130bfc/68265223207.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/tuxorotesimadakiremiweb.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/affichage_informatique_traduction_en_anglais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9e9bb04-a69b-4f37-ba73-d302b0a057f9/8765002322.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/nursery_abc_video_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d2b651-3c01-4c9c-be84-127ac238ec75/minecraft_iron_chests_mod_crafting_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccdce62e-93fc-458a-8159-7b77ee54849b/20024270754.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_off0000c65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65B 5168 bytes
SHA-256: ada1cebebb6bb3581b958bc174d4ea7c1d819fb533cfc3e6cec27e85fe59a88c
font_01_sfnt_off0000d7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 10308 bytes
SHA-256: 63e5c38260de44106ea74db5804620bab5e7112ba4f25d715cfd9e9d8ca3ff45

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