Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fcfd8fc3952dfbf…

MALICIOUS

PDF

84.0 KB Created: 2021-03-11 19:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6a2cb166be8bde40af04becd342ffc8 SHA-1: d4dafad48da8343aae41d48a29790d3b510640b2 SHA-256: 8fcfd8fc3952dfbfc72452cbb68ac5d26ae065d7c37a6d5bf537af6667bf4390
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified as a phishing attempt. ClamAV detection and ML classification further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site, likely for credential harvesting or malware delivery.

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://dafemum.ru/award?keyword=radiation+biophysics+pdf
    • http://myfirstsite.xyz/gafoladekorabojamawuvej21au.pdf
    • http://yesnutural.space/hamilton_beach_49983_2-way_flexbrew_coffeemaker_manualqynd9.pdf
    • http://gijofabenetawix.66ghz.com/intelligence_committee_report.pdf
    • http://fetiweresanamud.iblogger.org/will_would_exercises_with_answers.pdf
    • http://rixiroremijiw.22web.org/wheel_of_fortune_game_answers_thing.pdf
    • http://1-bog.ru/41924568155jimgl.pdf
    • http://nulatapukedu.scienceontheweb.net/moxobavogidukani.pdf
    • http://tersq.fun/36039002608zi0c7.pdf
    • http://file-id.ru/52434567956d7100.pdf
    • http://fanisore.sportsontheweb.net/axiom_pro_49_power_supply.pdf
    • http://luminar3-download.xyz/13146594651w5m03.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://buzawasilugije.epizy.com/spotify_premium_apk_cracked_xda.pdf
    • http://redikubegoda.epizy.com/witixira.pdf
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_2fba843670aa4becae6836d0f3e32af0.pdf?index=true
    • https://d4bcd744-2348-4fe3-9006-05b2fcbd3cbd.filesusr.com/ugd/704566_e513abaefa5d4e99b89837ed50c78114.pdf?index=true
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_9e3786094e784694a1df04eb14570118.pdf?index=true
    • http://miloritamuve.rf.gd/65011248979.pdf
    • http://furiroj.rf.gd/electrical_and_electronics_questions_and_answers.pdf
    • http://dejomogilum.rf.gd/21662849484.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_off0000e2db.bin
9bdb93b588325c6666154a4998bb30b4c44e65114e2b99be39f51a5f8b60cff1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DB 13052 bytes
font_01_sfnt_off00010cfe.bin
d597e904f933d3321b6558e4db64bafad23d5ce37dd2a38234a09317e2693e00
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CFE 5364 bytes
font_02_sfnt_off00011f49.bin
d693859734a179f82ef6f635b0a8089fdb3592aabf987fc293c35beaa8f46a87
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F49 10388 bytes