Malicious PDF — malware analysis report

Static analysis result for SHA-256 1000159363206779…

MALICIOUS

PDF

67.1 KB Created: 2020-11-25 11:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d172f22b40475c9d1ad46fb0ec18c5d SHA-1: 14351a8f1a6527dc4968b62b37bd12e9a490e02e SHA-256: 10001593632067794be0db55398d2c1b770228dcbec7188634101902e57dd7f8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of an external URI in a PDF document is a strong indicator of malicious intent, often used to redirect users to malicious sites.

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://trafficel.ru/123?utm_term=find+the+average+value+of+f%2528x%2529%253Dcos%25282x%2529+on+the+interval+0+%25CF%2580%252F2
    • https://romovemesokawaj.weebly.com/uploads/1/3/4/4/134479736/rebasejibeba.pdf
    • https://kirewigofe.weebly.com/uploads/1/3/4/3/134382955/8909863.pdf
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5f90a9e3c6996.pdf
    • https://nonuvatemex.weebly.com/uploads/1/3/4/4/134443968/pomataluliru.pdf
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/36c49.pdf
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5fa6d6905380c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/guxosa/owners_manual_for_2016_audi_a6.pdf
    • https://s3.amazonaws.com/tojazudibumogab/happily_ever_after_download.pdf
    • https://s3.amazonaws.com/divexikav/vesamogodabanexuf.pdf
    • https://uploads.strikinglycdn.com/files/56ef52b4-04f6-4bf3-a942-9d37cc073590/61421204260.pdf
    • https://uploads.strikinglycdn.com/files/61178486-6d01-40c8-97ae-19e1ddbe967e/13255551829.pdf
    • https://s3.amazonaws.com/fizaxo/2141416682.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_off0000c1aa.bin
2cd24942b4d495e77f3f3c07c978705c563ca0f68a30fc62748c15920b8a6df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1AA 6000 bytes
font_01_sfnt_off0000d64a.bin
26c2bcf1f199282d327e446a59230702b7bb9bff537585b2fdf898d0a8e4a423		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD64A 11444 bytes

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