Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf0b6ab84caeeda…

MALICIOUS

PDF

78.4 KB Created: 2021-03-04 11:00:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6fa36daae8b7c0cadd1a01a0e1d87be2 SHA-1: 13e3b2097eb2ac4cb51d8ad87c8140cf9c22de54 SHA-256: eaf0b6ab84caeeda8563c39bf1720e55f1a7a5dfbb45dd60e5b7bda9796ca5cc
126 Risk Score

Malware Insights

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

The PDF contains multiple external URLs, with one specifically referencing 'xbox live issue today' and leading to a suspicious domain. Heuristics indicate it's a link farm on disposable hosting, and ML classifiers and ClamAV strongly flag it as malicious phishing content. The document body, though heavily obfuscated, contains keywords suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=xbox+live+issue+today PDF link annotation
    • https://cdn.sqhk.co/totimujid/YnheQ8g/hide_and_seek_2019_movie_trailer.pdfIn PDF document text
    • http://palifagumelu.22web.org/71069477760.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/hifibgf/retozupilunugoluw.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/juxhagj/37541891791.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/hdKhigi/ronoxojipasojosezewodak.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvifilezaja/hethdZ3/94983356660.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/SYhbhiC/83828686547.pdfIn PDF document text
    • http://mipefukonuvav.iblogger.org/chrome_manager_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/jjkgghf/fuvuligitijalijunupuxedul.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/gcBFifc/snowflake_stocking_holder.pdfIn PDF document text
    • http://copyright-services-us.com/meropotexizxkxku.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/6LXgjmN/crowdsourcing_examples_wikipedia.pdfIn PDF document text
    • http://benosetib.iblogger.org/garisigiterikur.pdfIn PDF document text
    • http://ruroraratotu.66ghz.com/calculate_your_ecological_footprint_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefolitaweni.epizy.com/tell_me_about_yourself_quora_answers.pdfIn PDF document text
    • http://tezipibuboxigo.epizy.com/las_ketchup_the_ketchup_song.pdfIn PDF document text
    • http://mukokulag.epizy.com/luxilegekuloj.pdfIn PDF document text
    • http://wivoruremuwun.rf.gd/80918377534.pdfIn PDF document text
    • http://wetedezowob.rf.gd/how_to_work_a_robertshaw_thermostat.pdfIn PDF document text
    • http://bowupezik.epizy.com/64940838272.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED24 5072 bytes
SHA-256: 64a6c54ebbc1c6a4abfeffe774d83f2c7598adb26207744a6e21098daa3f968f
font_01_sfnt_off0000fe76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE76 1820 bytes
SHA-256: 1e7ecf19709c443715ab984a1fc35a88cad5b910c55d8d075759a054211efd7d
font_02_sfnt_off00010728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10728 10704 bytes
SHA-256: a8f29bf3cf2109a928047992632f426d6cca71e1738748997f8891002406cbe7

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