Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd7daded3c2c474…

MALICIOUS

PDF

72.2 KB Created: 2020-11-24 07:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 227dba0daddbe2a88b4ee4c720bbc262 SHA-1: d5bff11eae87d013634d751f658f5e650477fbae SHA-256: 0bd7daded3c2c474ae96c223e96d777e8bf854b60e702f63a1fda6cb8ae4ec04
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that, when clicked, likely leads to the download of a secondary malicious payload. The document body, though heavily obfuscated, suggests a lure related to 'mcafee epo interview questions and answers pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=mcafee+epo+interview+questions+and+answers+pdf
    • https://cdn-cms.f-static.net/uploads/4377674/normal_5fb6b32c9ee4b.pdf
    • https://tilobumofiraji.weebly.com/uploads/1/3/4/4/134492377/fadc3428cc344.pdf
    • https://cdn-cms.f-static.net/uploads/4377697/normal_5f8e526576647.pdf
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/bb427ecff126227.pdf
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5fad905c7a7c9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b0d53ea2-5464-4ad5-a4b2-fc263a109b30/que_son_las_odas.pdf
    • https://uploads.strikinglycdn.com/files/55a928d8-cd1d-40ff-801b-bbea53f8b5fb/wozuzinunipovuk.pdf
    • https://uploads.strikinglycdn.com/files/9c23121a-83a3-4f07-8ef1-d7421a163a63/figudotexupufusibif.pdf
    • https://uploads.strikinglycdn.com/files/9e262ff4-9b47-4770-be80-54e8f62115ef/56832789839.pdf
    • https://uploads.strikinglycdn.com/files/9a694771-1ba9-4cd8-b3c2-1e7f4a309efe/69860522335.pdf
    • https://uploads.strikinglycdn.com/files/f5d2eca0-c3fd-4f16-ae61-2f9412ccdb22/musopo.pdf
    • https://uploads.strikinglycdn.com/files/8c3992cc-fb40-492e-85aa-f62de7e6bddb/scion_xa_service_manual.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_off0000df13.bin
e73cc13e1015da8c46d590dc65357afdfd5ce14652f915bf11a6b427a6cff7a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF13 5400 bytes
font_01_sfnt_off0000f1a4.bin
8c21f250573ceeb85a6fdea67fa81c35ffa059dbd18e5dd72b9e5a0814375027		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A4 10160 bytes

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