Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b32509e7d442ee…

MALICIOUS

PDF

63.5 KB Created: 2020-12-22 16:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 83d64ac2ea76a1cf245d12d439ab1217 SHA-1: e715a857bd831e806f43b569d4a67933444bec16 SHA-256: 03b32509e7d442eecc758de690f8b1bea18129fac07309d46c03abfa84b0a26f
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 'https://ggtraff.ru/123?utm_term=la+causerie+des+mondes'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The embedded URL is likely used to lure the user to a phishing site or download further malicious content.

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/123?utm_term=la+causerie+des+mondes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_5fae552a2a4d1.pdfIn PDF document text
    • https://funogumoduwe.weebly.com/uploads/1/3/4/3/134309977/3144726.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f9f0c1cedaf6.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/c2295fdc31f0a30.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/widetunipet/synthetic_antimicrobial_agents.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/womulile.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/alan_walker_faded_piano_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e92f72d-155c-453d-9ad6-c7e213da60ba/bosusufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891add4b-e54d-4976-bf37-5761fa343bc1/ap_biology_chemistry_of_life_study_g.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/epic_7_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/mapova.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_off0000bae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE3 4996 bytes
SHA-256: 431c59c3bd5a32aca31614a31b58f459ac9e7396c3ba5fd0662ea49796a84d3e
font_01_sfnt_off0000cbc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC8 12048 bytes
SHA-256: 2e3766a03265459eba84d6c648db7948c52b76f1f8da060c5a8f65f5ac98e497