Malicious PDF — malware analysis report

Static analysis result for SHA-256 882f873b77b25d1a…

MALICIOUS

PDF

88.3 KB Created: 2021-04-03 15:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 48ad8bd2c35ce33fd724950c17a79f11 SHA-1: 4904a68d4179783acc280fb1dc39b9aa123f55f9 SHA-256: 882f873b77b25d1a09ac47f65118b1d81fd1a143d245fb6f56678e5be641fd58
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious 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://jumiwimov.ru/aws?utm_term=what+is+narrative+structure+in+writing PDF link annotation
    • http://tohld.in/how_to_calculate_interest_on_loan_in_nigeriapp4ve.pdfIn PDF document text
    • http://wersita.space/larerqlcs2.pdfIn PDF document text
    • http://beautysss.site/what_is_the_best_lg_tone_bluetooth_headsetiuw3g.pdfIn PDF document text
    • http://ygrash.website/champion_3100w_inverter_generator_with_remote_start_canadazprtc.pdfIn PDF document text
    • http://kilesetemopibaf.22web.org/sosalesexewezazosamaz.pdfIn PDF document text
    • http://igcopyrightforhelps.com/bukegaja0ch9e.pdfIn PDF document text
    • http://xukiwuze.22web.org/55614202787.pdfIn PDF document text
    • http://tiktokfrance.fun/579654767763w0n4.pdfIn PDF document text
    • http://arenaprobet.com/pigagembt9fa.pdfIn PDF document text
    • http://shopwithsale.website/hp_officejet_6500a_plus_ink_replacementnihcc.pdfIn PDF document text
    • http://disconto50.pro/the_complete_tales_of_winnie_the_pooh_book13ds9.pdfIn PDF document text
    • http://pavawafupef.66ghz.com/jaguars_titans_injury_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xodubepegiluli.rf.gd/hindu_festivals_calendar_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d614e193-68a9-4d42-84d1-d3809563bda0/how_to_replace_kenmore_microwave_light_bulb.pdfIn PDF document text
    • http://gilikasozomexo.epizy.com/zunuwiwumipibugesededeged.pdfIn PDF document text
    • http://ribaxekag.epizy.com/pneumopathie_d_inhalation_traitement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2389fa59-725a-44e8-8616-d4061545d13d/ejemplos_de_monografias_universitarias_peru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a6a3cb9-3999-4aa2-923c-309b224dd856/the_secret_life_of_pets_3_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/989def9d-fdb9-4523-bb23-eaca4579bd9b/arris_surfboard_sbg6580_blinking_lights.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c31f2fd6-d401-4065-9c14-437b8da190f1/17641991554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97209c58-b23a-48c1-a34e-258b6d7b756e/75756991626.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_off00011d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0F 5196 bytes
SHA-256: 8973604dd93f8be21544f812f34c4da78fe42d8575ae104770daa93b27c1b9c1
font_01_sfnt_off00012ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED5 10740 bytes
SHA-256: b68ee42c0756d85211dc3b99181b44c1b9ee1605060e4d442d4c5fb7f865f90c

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