Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1698388b3569a43…

MALICIOUS

PDF

83.4 KB Created: 2021-03-01 15:26:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e0814919fba2604adbc868d7d83adb SHA-1: 834c995a2ab1dfee723b878534309362a0359f37 SHA-256: e1698388b3569a43612ab6e5c7c144cffcef17879afcc05f69968806b238c958
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing. The PDF structure itself is also flagged for duplicate object bodies, indicating potential obfuscation or malformation.

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://resalured.ru/123?utm_term=the+elephant+man+movie+summary
    • https://static.s123-cdn-static.com/uploads/4466411/normal_5fe3fd76e2e7c.pdf
    • https://cdn-cms.f-static.net/uploads/4370089/normal_602a7054202b6.pdf
    • https://static.s123-cdn-static.com/uploads/4370055/normal_6007b74189af1.pdf
    • https://cdn.sqhk.co/zalopubid/cEgjie5/nemexifozudoxiwinagete.pdf
    • http://gedadekenoz.mywebcommunity.org/15531535294.pdf
    • https://static.s123-cdn-static.com/uploads/4409413/normal_5ffc310c6a167.pdf
    • https://static.s123-cdn-static.com/uploads/4470526/normal_5fc98537c3d33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pafiganovavi/bvms_7._5_viewer.pdf
    • http://gaxapokone.epizy.com/how_to_connect_countertop_dishwasher_to_faucet.pdf
    • https://s3.amazonaws.com/megujobemegor/malwarebytes_free_for_xp_filehippo.pdf
    • http://kakasis.onlinewebshop.net/40303167031.pdf
    • https://s3.amazonaws.com/sulasatevirexo/antutu_3dbench_apk_pure.pdf
    • https://s3.amazonaws.com/guwutivupudutu/88343673699.pdf
    • https://s3.amazonaws.com/nigimul/24133748568.pdf
    • https://s3.amazonaws.com/bisute/catherine_millet_livre.pdf
    • https://s3.amazonaws.com/nunakixuma/bazop.pdf
    • https://s3.amazonaws.com/pulavokaxe/fanuc_cnc_manual_guide.pdf
    • http://xifonefoje.epizy.com/environment_agency_river_thames_guide.pdf
    • http://ralopokizuneza.rf.gd/43076772352.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_off00010944.bin
999ba4e043717f598d560878b20e178110423992b2133ee121b2632507011df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10944 5168 bytes
font_01_sfnt_off00011ab8.bin
07e20f07dee9c894485001389103f375d8b97e2f5be8089c87deead527f50588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB8 11180 bytes

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