Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c54c75f07fce7a…

MALICIOUS

PDF

67.3 KB Created: 2020-12-22 19:58:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6989e8b65ad1bb07d1353a0450ea25d3 SHA-1: b87e0937a0544627729525b7d042719acc846e1c SHA-256: f3c54c75f07fce7a581b625576a840d5c4d15f0126dd704e030cda446295286a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'traffmen.ru'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/aws?utm_term=diy+wood+pallet+platform+bed In PDF document text
    • https://kilixezexixoz.weebly.com/uploads/1/3/1/1/131163494/b5faa915d.pdfIn PDF document text
    • https://judozonax.weebly.com/uploads/1/3/1/4/131454501/famedenu.pdfIn PDF document text
    • https://pufotawimudob.weebly.com/uploads/1/3/4/3/134380049/b3420829.pdfIn PDF document text
    • https://rogefiraf.weebly.com/uploads/1/3/4/5/134581109/8496139.pdfIn PDF document text
    • https://ponivigaxuk.weebly.com/uploads/1/3/5/3/135313456/detoretikitas-biluvar-xopulu-nariw.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/221e2151-5f27-4ab9-b8a4-6ed7306cf0b4/14284759310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e620e6c-ea82-4ce2-9775-064e40dfdb11/tighten_bike_shifter_cables.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/090029d5-0516-4e14-9220-5c82a0b9f10b/xufagabejupokaruzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c70c569a-7fbd-4a91-8877-617a67d9fd0e/42773504839.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/sesulabixupukofiwaxisibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff0dc160-83a9-4a4c-a39e-73119eb702d9/phim_bo_viet_nam_hay_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cacfc8a1-53a0-46b1-8e66-4806be02f68b/gepexe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d489192-240d-42bc-b18a-8d947124e74c/39856953681.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_off0000c9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9ED 5344 bytes
SHA-256: dd76c51dc760ea03b46d14e39c146cd8b36bf8243908f466fc57e521ebae5495
font_01_sfnt_off0000dc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 10796 bytes
SHA-256: 8837ef7a7a172e0a66457e1dccfb6136336b5cb1d3bbabe2b11ebfdb51d410a1

Open this report in the interactive analyzer, or submit your own file for analysis.