Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede1cd9bcdc0cdc8…

MALICIOUS

PDF

84.1 KB Created: 2020-12-17 11:47:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66124b961c1557dcc885a577b3002f9e SHA-1: 53451a41d25db19c45955fad5ed717add0c14f51 SHA-256: ede1cd9bcdc0cdc831dde4667fc9d6264d5ee80e88bdd417d66772190e172066
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classification and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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
  • 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://trafficel.ru/strik?utm_term=5+major+biomes
    • https://static.s123-cdn-static.com/uploads/4416125/normal_5fcdfd41258ec.pdf
    • https://mugafurevokez.weebly.com/uploads/1/3/4/8/134894013/9599367.pdf
    • https://nifazupu.weebly.com/uploads/1/3/4/5/134507595/31a94d.pdf
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/zobabaneragam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0c273a13a450babf34cb7/t/5fc5552ce6d49a06bb4423f8/1606767917896/scientific_method_quiz.pdf
    • https://s3.amazonaws.com/lotibabakuj/2527392626.pdf
    • https://s3.amazonaws.com/divikufifir/alien_covenant_300mb_full_movie.pdf
    • https://s3.amazonaws.com/xesigeze/duwotegusowositopet.pdf
    • https://uploads.strikinglycdn.com/files/5b62dbe2-8e7a-4e35-b2a1-0d4437a2a6a8/1855468591.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109fa.bin
9e0a160fa5a14fd297ca5e82c6f1696c38ef78570bd85b15423c0762a946327f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109FA 5044 bytes
font_01_sfnt_off00011b08.bin
ffecab5ed6ab5dc467582d2e809602a8127c948c3cf316c63213494d702df3fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B08 12948 bytes

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