Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9b803f8ca12ccf1…

MALICIOUS

PDF

74.9 KB Created: 2021-04-05 07:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4a921c35fe9e3f44598fd8300cee485d SHA-1: f11608ad2b928aac8eb58e3dc57a1fe2ac4563a6 SHA-256: c9b803f8ca12ccf1001c91bdffa815262100fa269ecbeca555f13c6f93e2858f
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the presence of external URIs and the overall heuristic profile points to a malicious document designed to redirect users to potentially harmful 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=skilsaw+model+77+parts PDF link annotation
    • https://manasuma.weebly.com/uploads/1/3/0/8/130873954/metok_dusis_jogirabesarizu.pdfIn PDF document text
    • https://mikatafa.weebly.com/uploads/1/3/1/3/131398449/6886405.pdfIn PDF document text
    • http://golivexi.22web.org/python_coding_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/ijib3ii/ringtones_free_download_telugu_love.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/banjara_video_song_number_padal_ing.pdfIn PDF document text
    • http://nuvoked.22web.org/opening_gap_trading_strategies.pdfIn PDF document text
    • https://cdn.sqhk.co/wusirilunoko/olyRLr3/birla_sun_life_mutual_fund_stp_form.pdfIn PDF document text
    • http://mantenancie.com/33183131748v7zp.pdfIn PDF document text
    • http://soldatskaya6.ru/kasuwuwawati6kt0f.pdfIn PDF document text
    • http://zavudonalu.66ghz.com/algebraic_manipulation_worksheet.pdfIn PDF document text
    • http://pojegan.22web.org/how_to_use_self_clean_on_ge_true_temp_oven.pdfIn PDF document text
    • http://redpandarecycling.com/6386593859865evr.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/Kjhhcya/nijapedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://75e6061f-eb7a-4ce8-b546-077bf96366c3.filesusr.com/ugd/2dfd19_3f878e7922d44df6a0aaedb78b8b2ab7.pdf?index=trueIn PDF document text
    • http://zewedazogiwake.rf.gd/89230805244.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/gefijadejafol.pdfIn PDF document text
    • http://zimipasazodid.rf.gd/what_is_normal_color_deficiency.pdfIn PDF document text
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_c1e3ebeddd2446e2a354f4cc0665ac9f.pdf?index=trueIn PDF document text
    • https://0bc2ebcf-5b85-435c-8290-6c6350a165f2.filesusr.com/ugd/ee98f5_6d3c7a3a0edc4d2c89f249315c28f44a.pdf?index=trueIn PDF document text
    • https://8d90b851-447f-4cfc-ac95-1e867b71b983.filesusr.com/ugd/b371d9_13ac2b3945224cd497070d63172f2b2d.pdf?index=trueIn PDF document text
    • http://jegigas.epizy.com/call_me_by_your_name_trailer_subtitulado.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70B 5444 bytes
SHA-256: a64acd4229c2a4252f73e96eb04e214b45722b512399734e40ff824691a9bba1
font_01_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 10312 bytes
SHA-256: 5730b9f768d08f12a78731225baf110afc40155beb0a42f2292fb53fb53eaf88

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