Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6817afc585424c9…

MALICIOUS

PDF

75.8 KB Created: 2021-01-26 14:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8c248f2f1ed047bd392d538780da4350 SHA-1: 62ba597ed309488a7bcfe6d2722067d6c7594d72 SHA-256: e6817afc585424c9e09731b646b068ea9efe7cd5cf8383e8e7d590820ffc7eea
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be related to search terms, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=plants%20vs%20zombies%20heroes%20apk%20data PDF link annotation
    • http://muzhskoizhurnal.ru/53544146924khvto.pdfIn PDF document text
    • http://shoop-fr.ru/914683921252wgm.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/hb7Abjb/loophole_meaning_in_bengali.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/7hhjfjg/indoor_go_kart_tracks_in_pigeon_forge_tennessee.pdfIn PDF document text
    • http://badgesverified.com/battle_angel_anime_movie_english_dubbedpvxyf.pdfIn PDF document text
    • http://ifeelgood.club/237919762099iltl.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/jajjhem/cash_out_day_meaning_in_betting.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/idijid8/8521495119.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://larisakexifa.epizy.com/dietary_guidelines_for_iron_deficiency_anemia.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/16210721170.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/realidades_1_capitulo_1a_repaso_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/16576000260.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/pujafemedarogenoberiretof.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/52357286811.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/48163391134.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/nojujewanilesudetaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/gartner_magic_quadrant_report_for_workload_automation.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_off0000e03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03D 5516 bytes
SHA-256: 1742a9f6f698c6f4b898058cb1e9b53edd0ce1246fefddd800d36e9a95841fcc
font_01_sfnt_off0000f2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CF 18352 bytes
SHA-256: 60abb9984d39b2ed41cee0c18d3e2dcd1688b1bd20aec138bb9782cb0cef612e

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