Malicious PDF — malware analysis report

Static analysis result for SHA-256 860e0d8f0b22221b…

MALICIOUS

PDF

76.0 KB Created: 2021-03-02 16:12:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 162800c1ff2f3ac60ffd6f34fae77154 SHA-1: a41efc5b9f4b3851faeaf3e15b90cc4f09e180dc SHA-256: 860e0d8f0b22221bb9833fa00fc62cdeab6ccb219a597ba570f41de8fb6f4b27
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended to phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a recipe, which is a common tactic for social engineering.

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://druttle.ru/strik?utm_term=how+to+cook+chicken+wings+in+farberware+air+fryer+toaster+oven PDF link annotation
    • https://cdn.sqhk.co/kezulegol/78gc3ic/31072596102.pdfIn PDF document text
    • https://cdn.sqhk.co/kujaruwajovi/dGiaF2B/wabexejelus.pdfIn PDF document text
    • https://cdn.sqhk.co/xamozafi/bjejfhc/jukeviwinoxelajulasijup.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/ust4ig7/10833501938.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417656/normal_5fc9843e6a93c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454995/normal_5ff47d6037d80.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/bR6o4tV/pasilize.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488092/normal_5ff06197c2046.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/H6Zgdhb/tibedez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456985/normal_5ffbdeac32388.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/jicSibc/69563956462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_6010cafa2fe72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_6030d2b0d5979.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://molugafew.epizy.com/mevozejixunoxesanom.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/xatefidete.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/weekly_work_schedule_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/educational_background_interview_questions_and_answers.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 5532 bytes
SHA-256: f973e99dd4d1e15d5d0943f6a54f19612b369900cdbecf4b8408f3881a88211e
font_01_sfnt_off0000fd73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD73 10832 bytes
SHA-256: 51e667961ff02c9453090799c5ce128dfd36be20e0598fb1cddb458570fa6e57

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