Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bef85d33e985bf0…

MALICIOUS

PDF

79.3 KB Created: 2021-01-23 21:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0cf11594b13e4ca8d063ce7201dab524 SHA-1: 984c6d1f6cca32354d012cb82ea7630a9ad9f621 SHA-256: 4bef85d33e985bf0b02c2a4fdc926b1cdd3ca85196185c0a080e9800e81b7782
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/123?utm_term=celebration+hymnal+pdf PDF link annotation
    • https://cdn.sqhk.co/jegamaxegev/ygffial/peganoleketegofovepagol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404725/normal_5ff3f028d0aa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384318/normal_60007697c8c42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392667/normal_5ff2e815bb314.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451567/normal_5fe01a92e60e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5ff938c921fc9.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/HjehfEB/cartoon_cat_meme_generator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419645/normal_5fe3f7df122e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421213/normal_5fc56d72234be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484995/normal_600489c48f5b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5ffc2b578d9c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416331/normal_600a511f9201f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408001/normal_5fc9110da41f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://masekafisixovok.epizy.com/tujaxipowa.pdfIn PDF document text
    • http://dipulitexaxuz.epizy.com/armonicos_en_la_red_electrica.pdfIn PDF document text
    • http://nixuverojezuluz.epizy.com/bio_rad_cfx_manager_mac.pdfIn PDF document text
    • http://surotatifezuxe.rf.gd/arkanoid_free_full_version.pdfIn PDF document text
    • http://lakiver.epizy.com/77785893243.pdfIn PDF document text
    • http://diwisowaf.rf.gd/topezimaki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B1 5156 bytes
SHA-256: 146a61d94890f96c2bb151efb8db88c9a00a255f38fbf6f76940c2a856babdc8
font_01_sfnt_off0000fa04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA04 11660 bytes
SHA-256: 5e8bac53503569922df5cd9671d206433626254e2e387fea70392cb042ed5e7c
font_02_sfnt_off000121c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121C0 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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