Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3a3e1255a4797a…

MALICIOUS

PDF

65.8 KB Created: 2020-12-31 02:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de8c2ac0df36196ab614cfa3661eeb92 SHA-1: 71821963fa97e04a6660f1949617d261e28ced9a SHA-256: 8e3a3e1255a4797a3c16b566b3dc80fc1b7b7d510b16f7d1656d954af7428b56
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan and a machine learning classifier. It contains an embedded URI pointing to 'traffine.ru', which is likely a malicious domain used for phishing or to host further malicious content. The document body is heavily obfuscated and appears to contain junk data rather than a coherent message.

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://traffine.ru/123?utm_term=summerfield+high+school+principal
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fe102da31e98.pdf
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5f9c2d7fe462f.pdf
    • https://cdn-cms.f-static.net/uploads/4389582/normal_5fbeeedabcf47.pdf
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5fbdfe25df591.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kulinisokakewi/not_accepting_gods_forgiveness.pdf
    • https://s3.amazonaws.com/nitizobuv/video_using_facebook_url.pdf
    • https://s3.amazonaws.com/benubapopikaj/girl_names_beginning_with_e_yahoo_answers.pdf
    • https://s3.amazonaws.com/vuforewebub/dazomenesam.pdf
    • https://uploads.strikinglycdn.com/files/586864d9-31fa-4072-9650-e0adcbf215a1/tuzukefuvekigexulo.pdf
    • https://s3.amazonaws.com/minabiwa/cetoacidosis_diabetica_y_coma_hiperosmolar.pdf
    • https://uploads.strikinglycdn.com/files/56a89e02-126e-4242-816a-6da500864aec/21542676772.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b836.bin
50db5da0e9bdc520c9ca1455a6be3804e453c5a285c68025235d225356126099		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB836 5472 bytes
font_01_sfnt_off0000ca99.bin
b3f8a324250943be152abf7558a805f6018e13fc4c56e6ff13c32e6f4290af79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA99 9972 bytes
font_02_sfnt_off0000ecc9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECC9 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.