Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e3c900226993c6…

MALICIOUS

PDF

76.0 KB Created: 2021-02-25 09:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 2f7a26fc77e475675d649d6d1b7d5184 SHA-1: ece0459dfb8ab9e7be44a636b1f1bae9c110ab69 SHA-256: 19e3c900226993c664eec6710d5470d16ee013763e5c8c006d855364277a5ec9
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or malware delivery mechanism. The document contains numerous embedded URLs, with a notable one pointing to 'bologen.ru', suggesting an attempt to redirect users to malicious content. The PDF's structure and the presence of external links, combined with SEO-related heuristics, indicate a pattern of luring users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=fire+tv+stick+apk+installieren PDF link annotation
    • https://jotozorofelafik.weebly.com/uploads/1/3/1/4/131405965/542b8b3e1f88ff2.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvukidovime/yUheOii/laser_tag_canton_ohio_prices.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5ffbb341f3aca.pdfIn PDF document text
    • http://endi-itali.space/17064563426n2y4o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_600062dedd3e7.pdfIn PDF document text
    • https://cdn.sqhk.co/baxajufim/hcTBajd/justin_bieber_just_friends_lyrics.pdfIn PDF document text
    • http://autolombardpro.ru/mupaniwumaxidkvmkl.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/Yhhih3E/escape_from_physics_laboratory_walkthrough.pdfIn PDF document text
    • https://ratesikumetu.weebly.com/uploads/1/3/1/1/131163578/46e23.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403410/normal_5fdcf827ad4a5.pdfIn PDF document text
    • http://phtech.site/organizational_structure_examples_nonprofit189ag.pdfIn PDF document text
    • http://about-igsupport.com/83454465342tz4ox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/tazetuxorefotepekozige.pdfIn PDF document text
    • http://vonizevugopu.rf.gd/norton_power_eraser_free.pdfIn PDF document text
    • http://nuzetewadan.epizy.com/avengers_movies_in_tamil_isaimini.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/brocade_300_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/asimo_robot_information.pdfIn PDF document text
    • http://zuvemodu.rf.gd/rinepadularoxalejerunake.pdfIn PDF document text
    • http://minegavanifur.rf.gd/application_loader_xcode_11.pdfIn PDF document text
    • http://fugedofa.epizy.com/lezador.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/business_card_template_size_uk.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_off0000edeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEB 5008 bytes
SHA-256: 449e67d0ac9e8a7ca71b386e754ee3bc967df75b965bb601f8b83569a537c061
font_01_sfnt_off0000ff15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF15 10428 bytes
SHA-256: b02982bb347508f757c468533463064058689b4e384b7e070dbc29d8b3e2aef8

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