Malicious PDF — malware analysis report

Static analysis result for SHA-256 b04a9b601cfea37c…

MALICIOUS

PDF

79.2 KB Created: 2021-02-26 21:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b92e80418dbe0b4fb6e136de5f415ff6 SHA-1: 6f35c4a9984f4668e1ec012f50c9a8df8b890b1c SHA-256: b04a9b601cfea37c5486d9158f2670c13535feeae84aa363160e8e99d347b770
134 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains elements suggestive of an invoice or payment lure. The presence of numerous external URIs, many hosted on disposable domains and employing UTM parameters, strongly suggests a phishing campaign aimed at redirecting users to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/strik?utm_term=how+to+use+limits+in+calculus PDF link annotation
    • https://cdn.sqhk.co/luwivimexu/ibjehOm/gmod_gamemodes_for_2_players.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/aERjhn3/49372806376.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/Tghabjd/21046336349.pdfIn PDF document text
    • http://santaparker.store/67404245910v50mk.pdfIn PDF document text
    • https://cdn.sqhk.co/javajadoj/DhfhdiY/beat_cop_review_android.pdfIn PDF document text
    • http://ca-management.website/crs_reporting_cyprusktrtl.pdfIn PDF document text
    • http://begetus11ppz.xyz/94870117854p1gob.pdfIn PDF document text
    • http://agent-ritual495.online/marketing_strategy_2018uaqtr.pdfIn PDF document text
    • http://xitnet.fun/3256080359332yvc.pdfIn PDF document text
    • https://cdn.sqhk.co/demapibo/ujh7Nji/15101243661.pdfIn PDF document text
    • http://reduslimitaly-official.website/list_of_star_wars_canon_books_in_chronological_ordermreei.pdfIn PDF document text
    • http://letxxnx.org/yes_that_dress_game_online_freey37i5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xefejevife/76353117789.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/wow_bfa_eternal_palace_boss_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/katenujokitezidozodaj.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/seborrhoeic_dermatitis_capitis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/77327488730.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_off0000eb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB24 4784 bytes
SHA-256: 61a7bece7744c4e5295b34293d25dfb9fe95b0a13848d78a58d3a53aa69f45ba
font_01_sfnt_off0000fb61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB61 11432 bytes
SHA-256: b7f1566a8b00f6233a41e0c4088450229cb2010d62e7ffd0daad54d7d35cece5
font_02_sfnt_off000121d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D5 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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