Malicious PDF — malware analysis report

Static analysis result for SHA-256 db175d33a8cd2e0c…

MALICIOUS

PDF

81.7 KB Created: 2021-03-01 15:09:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b8c55bb1977592400a831fb50cea4c6f SHA-1: 6d4013074df8010c62f01f78d0ad42cfc2c57a7c SHA-256: db175d33a8cd2e0c5895aa418940fb69c3f4665d4de6dce3b6dfc73c204f8150
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it's part of a link farm or phishing campaign designed to redirect users to potentially harmful websites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest an attempt to manipulate search engine results or direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=panasonic+cordless+phones+service+centre+in+trichy PDF link annotation
    • http://grantmedica.ru/laptop_battery_calibration_software_freek8ahv.pdfIn PDF document text
    • http://insurancesouk.com/al_quran_al_karim_karya_bestaritsqdy.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/kectpjc/modern_strike_multiplayer_fps_critical_action_apk_download.pdfIn PDF document text
    • https://dawemewi.weebly.com/uploads/1/3/4/7/134747996/5826566.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/3530481316diagt.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/georgia_on_my_mind_trombone_sheet_music5q4e2.pdfIn PDF document text
    • https://kowelisabames.weebly.com/uploads/1/3/1/8/131857626/7961181.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/cyberpunk_2077_third_person_mod_ps4.pdfIn PDF document text
    • https://manomukujoputu.weebly.com/uploads/1/3/4/5/134517900/9037684.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/heihJB4/61494893991.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/wemazun/reporter_killed_by_isolated_tribe.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/connecticut_medicaid_income_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/castable_polyurethane_elastomers_second_edition.pdfIn PDF document text
    • http://malajusojak.epizy.com/motorola_talkabout_250_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/budgeting_worksheets_free_printable.pdfIn PDF document text
    • http://tipakixulo.rf.gd/aambala_movie_songs_masstamilan.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_off000100fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FB 5324 bytes
SHA-256: bdd874b2cd61afc11983efa37269027e6f0b3e5f738ca65e8ccea67ebd6b67a4
font_01_sfnt_off00011316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11316 11244 bytes
SHA-256: 14db11e11dc6acd6b7302f42ed22a31a31705bb8d8739fe733b8ea59bc754d4a

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