Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4da9f096cb14cc…

MALICIOUS

PDF

100.6 KB Created: 2021-03-25 12:17:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad23a7fe07d3a89c7501a9294e4ff66e SHA-1: 98d2904d007bc29146a6b8beae17bf70793d33c2 SHA-256: 7d4da9f096cb14cc07b903a225464361ba924ea90576f7f4ac1ff0ea9d6fd6ff
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to leadership styles, aiming to trick users into visiting the malicious URL.

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://jumiwimov.ru/award?keyword=definition+of+democratic+leadership+style+pdf
    • https://cdn-cms.f-static.net/uploads/4370767/normal_604167c8e619b.pdf
    • https://cdn-cms.f-static.net/uploads/4465007/normal_5fd9b0802fcec.pdf
    • https://static.s123-cdn-static.com/uploads/4402956/normal_5fed4713f05d7.pdf
    • http://dabosesavedevet.medianewsonline.com/kusogipom.pdf
    • http://setafugeridol.scienceontheweb.net/cardiovascular_system_diseases_and_disorders.pdf
    • http://zenaxudoriw.mypressonline.com/18593597673.pdf
    • https://static.s123-cdn-static.com/uploads/4459325/normal_5ffa1c0ea424e.pdf
    • https://cdn-cms.f-static.net/uploads/4424328/normal_6028b0f4c5178.pdf
    • https://static.s123-cdn-static.com/uploads/4444366/normal_5fcb7351116b3.pdf
    • https://cdn-cms.f-static.net/uploads/4414156/normal_6011c729a611a.pdf
    • http://kurutog.mygamesonline.org/agropolitan_adalah.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jivamubug/skip_counting_worksheets_1-_20.pdf
    • https://s3.amazonaws.com/bejenosugede/fidorotakozovovesuram.pdf
    • http://zuvuzevo.atwebpages.com/kosuxegezixi.pdf
    • https://s3.amazonaws.com/vogubivajavofu/nodelapobupedujibidifij.pdf
    • https://uploads.strikinglycdn.com/files/f0c95052-2462-4477-81a4-bc1a7df31b01/wulapariseb.pdf
    • https://uploads.strikinglycdn.com/files/bd428401-06d0-4e52-a417-467d51d0bd88/2001_ford_crown_victoria_repair_manual.pdf
    • https://uploads.strikinglycdn.com/files/e250e13a-71fb-4f2a-9db5-e64d0dfd65ce/does_washington_have_travel_restrictions.pdf
    • https://uploads.strikinglycdn.com/files/0dcacac6-0a0c-4299-b236-5d60344e0ec9/how_much_money_was_lost_in_the_enron_scandal.pdf
    • https://s3.amazonaws.com/kelageketisefuv/64547177674.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_off00014ce5.bin
804ed3463e45a996f68960909a4990d6e19ff7337273e05f5a6f11f5c0bcf422
pdf-font-stream PDF embedded font (sfnt) at offset 0x14CE5 5496 bytes
font_01_sfnt_off00015f75.bin
faffc6951e9203afd3f52e764478bfc40970eb9726829166fdc224bea5ca9f98
pdf-font-stream PDF embedded font (sfnt) at offset 0x15F75 11236 bytes