Malicious PDF — malware analysis report

Static analysis result for SHA-256 2169b8297d17f8ba…

MALICIOUS

PDF

67.0 KB Created: 2020-11-13 15:36:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8801bc228d7a6ed3172a448dce2ae944 SHA-1: 1389dc97097c40bb6ec179bc2903458be211e931 SHA-256: 2169b8297d17f8ba10ae18811ec24f0517201623c83753f1c1469da85791a0c4
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 URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'Bacterial culture techniques lab report'. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a phishing or malware delivery attempt.

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/aws?utm_term=bacterial+culture+techniques+lab+report
    • https://jodobape.weebly.com/uploads/1/3/4/3/134317169/fd0e3.pdf
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/mutum.pdf
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/60a3d8d7dd44.pdf
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5f9663c116600.pdf
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/bamow-nepuzasadumof-momexixabudomef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/risisipajole/bilamajakijebelawidegug.pdf
    • https://s3.amazonaws.com/xurixado/george_washington_academy_calendar.pdf
    • https://s3.amazonaws.com/lunojol/ferra_torr_fatality.pdf
    • https://s3.amazonaws.com/sevoga/word_meaning_in_hindi_download.pdf
    • https://uploads.strikinglycdn.com/files/11eea471-4f63-4582-b11e-d2c5fa12aa09/34500650940.pdf
    • https://s3.amazonaws.com/kesumasaka/jifuwurejos.pdf
    • https://uploads.strikinglycdn.com/files/cc81e952-e638-4a89-894c-301e6b706f9d/79729697877.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_off0000cb29.bin
7a9859cb8946abb4996a3516b42af2e49dcc0fe91f649aab99bb93a7f3b8d8ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB29 5336 bytes
font_01_sfnt_off0000dd44.bin
7b7e4a95239266c4e206bbf5225f960071b1f3e9c3dc54678b7c184fce5d669e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD44 9952 bytes

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