Malicious PDF — malware analysis report

Static analysis result for SHA-256 c979908b04dea5e9…

MALICIOUS

PDF

78.8 KB Created: 2021-03-30 08:26:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9c60a0c8201cccb19387c2d1ebe2957 SHA-1: 12d0bda8cd4394ca04534c7fd667a260f7bf2531 SHA-256: c979908b04dea5e9dd1cb06f597e079969459b94176e668e09e4a4c6f5f035ab
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/award?keyword=bwv+998+pdf+guitare+allegro+pdf PDF link annotation
    • http://teren.fun/ill_be_gone_in_the_dark_podcast_reviewmyb05.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwosexed/10idE89/gikesidekemovideti.pdfIn PDF document text
    • http://rezotu.xyz/princess_agents_season_2_episode_1xgp68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_5fcf0be1e2f0b.pdfIn PDF document text
    • http://znasila.ru/mary_poppins_supercalifragilisticexpialidocious_meaning_lyrics605cc.pdfIn PDF document text
    • http://tapagigozi.medianewsonline.com/robotic_hand_design.pdfIn PDF document text
    • http://warajuvevuv.medianewsonline.com/intl_business_machines_stock.pdfIn PDF document text
    • http://kebotup.66ghz.com/android_app_store_developer_cost.pdfIn PDF document text
    • http://linavaluviriv.getenjoyment.net/sozarurazujupawi.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/online_banking_system_documentation.pdfIn PDF document text
    • http://fuvagezilavez.mygamesonline.org/jemilapafefaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/tusufawenu/jid1iaE/86088279675.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirurafixi/iipjb6X/checkers_menu_calories.pdfIn PDF document text
    • http://slampochka.ru/chicago_style_citation_format_exampleeqytt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451971/normal_5fd7f1931a48d.pdfIn PDF document text
    • http://artyom.guru/junior_game_designer_salary_ukvo9s1.pdfIn PDF document text
    • http://goxelaxonudex.22web.org/neonatal_abstinence_syndrome_treatment.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://korofituzuxigu.onlinewebshop.net/subway_roasted_chicken_salad_nutrition_facts.pdfIn PDF document text
    • http://neluwomarar.epizy.com/61788692849.pdfIn PDF document text
    • http://vawivulumekil.onlinewebshop.net/storyboard_examples.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/how_to_connect_dishwasher_drain_hose_to_air_gap.pdfIn PDF document text
    • http://posijibanif.epizy.com/fagumiredufa.pdfIn PDF document text
    • http://ruvilex.rf.gd/paradise_lost_milton.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 7

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_off0000f467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF467 5580 bytes
SHA-256: c1728f23b92da95adc83e4621f5cf28c0093c6061b855b0125fef7b1b626820a
font_01_sfnt_off00010797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10797 11172 bytes
SHA-256: 358cc722d12803b75dd3e366e3d3650dee06871ae6677f6202f6c796785f3a56

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