Malicious PDF — malware analysis report

Static analysis result for SHA-256 30689774afd17dc3…

MALICIOUS

PDF

74.8 KB Created: 2020-11-11 02:38:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea9e91f98fdb83254b0c8968f5b5f471 SHA-1: d151ddc17825aa1ced15de19eafa6b0c5759a56e SHA-256: 30689774afd17dc3df37314f6b7b47e542fd8771b22cc4dab6802d0d841c1454
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and the document body, despite being heavily obfuscated, suggest a phishing or credential harvesting attempt. The presence of multiple external URLs further supports this, as they likely lead to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?keyword=lepke+buchalter+electric+chair+photograph
    • https://musazowoxagaw.weebly.com/uploads/1/3/4/3/134323980/0cee9d.pdf
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/678b7498c.pdf
    • https://tuzakalo.weebly.com/uploads/1/3/4/4/134492431/xegeratoxubobebaguke.pdf
    • https://sifumoxijobobo.weebly.com/uploads/1/3/4/4/134493963/f97b98140f8.pdf
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5fa1076924ae1.pdf
    • https://jofogeva.weebly.com/uploads/1/3/4/5/134505403/1308643.pdf
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/nasibexuti.pdf
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5f9b9bb642693.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sojuravewi/greek_mythology_corynetes_facts.pdf
    • https://s3.amazonaws.com/kavitokolezub/kafomigete.pdf
    • https://s3.amazonaws.com/dusined/76713450086.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_off0000db2c.bin
bd1a5941577e6240999f738eb6c937bd84bdec41ad0c72fba15f5f9aaf78e9fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2C 4936 bytes
font_01_sfnt_off0000ec0b.bin
eb91fa605647ac77f4657d6e45f88136b296d1d856a4b48625813c81b8abd791		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0B 10576 bytes
font_02_sfnt_off0001102e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1102E 4324 bytes

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