Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5a7352ca006dde…

MALICIOUS

PDF

67.6 KB Created: 2021-01-11 10:36:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8f52c8041e28dfaf71dd8f43b9886fe SHA-1: 74e945e1d3728b61cfc0870e41e78b0d2dd66377 SHA-256: ed5a7352ca006ddefb9b2ba41f9aa442ddb94f51b6cdf84485612c8fb881af47
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware delivery attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI indicate a malicious intent, likely related to phishing or exploiting PDF vulnerabilities.

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://trafffi.ru/aws?utm_term=la+valse+d%2527+amelie+piano+notes+pdf
    • https://site-1180530.mozfiles.com/files/1180530/jemituko.pdf
    • https://cdn-cms.f-static.net/uploads/4482399/normal_5fd8d1a4a0b4d.pdf
    • https://site-1173625.mozfiles.com/files/1173625/contractors_and_builders_in_cavite.pdf
    • https://site-1174733.mozfiles.com/files/1174733/46571239894.pdf
    • https://static.s123-cdn-static.com/uploads/4416940/normal_5fc515e62ad5e.pdf
    • https://cdn-cms.f-static.net/uploads/4485156/normal_5faf07416e9f6.pdf
    • https://static.s123-cdn-static.com/uploads/4500447/normal_5fca41b52c47f.pdf
    • https://site-1189714.mozfiles.com/files/1189714/sotemus.pdf
    • https://cdn.sqhk.co/filemowa/cjlAjhj/62388735175.pdf
    • https://static.s123-cdn-static.com/uploads/4458150/normal_5ff8094f7543f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kisimujuk/rorebadegileg.pdf
    • https://s3.amazonaws.com/rivazixexuguri/blank_dnd_character_sheet.pdf
    • https://s3.amazonaws.com/goviwigax/android_10_sony.pdf
    • https://s3.amazonaws.com/ximupuv/76768763518.pdf
    • https://s3.amazonaws.com/jivala/la_casa_de_bernarda_alba_spanish.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_off0000c8f3.bin
7ea99750cd166e9a9ab91cb9afbfb87d707f8d6dfaea2c5d5d501e762cedc396		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 5124 bytes
font_01_sfnt_off0000da67.bin
a927f9d0c00046499f1dcf171c923efe9347cb9cd3dcab623338349ef4406fbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA67 11736 bytes

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