Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1b583bf169499d…

MALICIOUS

PDF

71.6 KB Created: 2021-03-15 22:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83fe0f08dd42b60fb805d29e298f3b24 SHA-1: 18f6eadcc5108981c293c42cf33d5aacabef7c7a SHA-256: 0a1b583bf169499dbbc9954eb7f9347bbd10a1564a4464732361a06990072e3d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically identified as an external URI pointing to 'https://jumiwimov.ru/strik?utm_term=craftsman+10+inch+table+saw+rip+fence'. This suggests the document is likely a phishing lure or a distribution point for further malware. No scripts were extracted from this sample.

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://jumiwimov.ru/strik?utm_term=craftsman+10+inch+table+saw+rip+fence
    • https://bexipame.weebly.com/uploads/1/3/0/7/130776855/rezejibamebewopore.pdf
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/a0f5d59c6e0.pdf
    • https://cdn.sqhk.co/ronelejibir/bgdD6id/didukunavi.pdf
    • https://cdn.sqhk.co/wixakulu/hgUhbid/most_viral_funny_video_download.pdf
    • https://static.s123-cdn-static.com/uploads/4367279/normal_5ffc555e95ba2.pdf
    • https://wugupuvexiso.weebly.com/uploads/1/3/0/9/130969254/46b95dd40d03c3.pdf
    • https://static.s123-cdn-static.com/uploads/4370740/normal_5fecd5be8134f.pdf
    • https://gopaxeseje.weebly.com/uploads/1/3/6/0/136082610/wazabadegeg-vowukesuzupuza.pdf
    • https://cdn-cms.f-static.net/uploads/4501054/normal_600b022fb52ce.pdf
    • https://cdn-cms.f-static.net/uploads/4424043/normal_603bb549c4270.pdf
    • https://static.s123-cdn-static.com/uploads/4453336/normal_6008876123033.pdf
    • https://cdn-cms.f-static.net/uploads/4452624/normal_60419472c52e1.pdf
    • http://gedadekenoz.mywebcommunity.org/72449199619.pdf
    • https://cdn-cms.f-static.net/uploads/4467612/normal_600e83fdd1529.pdf
    • https://cdn.sqhk.co/wejafivelij/BhdsUZg/amusement_parks_near_me.pdf
    • https://static.s123-cdn-static.com/uploads/4379720/normal_5ff816766e6f8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_43493ab1ab3944cbab64c88e93dc2187.pdf?index=true
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_d22eca0ed1c8441d98e5d6843783d63f.pdf?index=true
    • http://bavotuvezomevi.myartsonline.com/why_is_my_bunny_changing_colors.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_off0000d787.bin
37e980c26a2fba006cfe5300a57ffe954ff9292a00539ed64a54fe2eae10d41c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD787 5588 bytes
font_01_sfnt_off0000ea67.bin
179df41cf35dc610198d8da4a42a6f638316ee5a23c9a0ec3130185c723ed0ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA67 11320 bytes