Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd73854d2fb866e0…

MALICIOUS

PDF

81.0 KB Created: 2021-03-08 00:59:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: c8a5343f60935aa318da1a4a418307a1 SHA-1: 18df41ba5c486db2f053dbc56168972aace9344b SHA-256: cd73854d2fb866e0f4f264fb8e0ebe93ead8c97ea87bcebd79779d7563ce4684
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • 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://kuzutuzo.ru/wb?keyword=how%20do%20you%20know%20your%20birth%20star PDF link annotation
    • http://autocredit.moscow/what_exercise_can_i_do_instead_of_jumping_jacksbz6ba.pdfIn PDF document text
    • https://lepefolavexar.weebly.com/uploads/1/3/0/8/130874674/fiwutimajijuna.pdfIn PDF document text
    • http://mon-cmso.best/polycom_hdx_8000_integrators_manualdqw82.pdfIn PDF document text
    • http://luwinilulurop.mywebcommunity.org/fuferidi.pdfIn PDF document text
    • http://kudikadip.getenjoyment.net/excel_2013_download_mac.pdfIn PDF document text
    • https://ninafaguri.weebly.com/uploads/1/3/4/5/134592808/fumugom.pdfIn PDF document text
    • https://wadagoxegoti.weebly.com/uploads/1/3/4/3/134385229/9706928.pdfIn PDF document text
    • http://healthyforczechrepublic.site/60582835336zb5qn.pdfIn PDF document text
    • http://tonerinkstore.com/what_is_hormone_reset_diet9sbef.pdfIn PDF document text
    • http://bobimesufapi.iblogger.org/mutants_and_masterminds.pdfIn PDF document text
    • https://divojalu.weebly.com/uploads/1/3/4/6/134664609/papenorudedak-wuzowopujud-jamuz.pdfIn PDF document text
    • https://jikigalogadod.weebly.com/uploads/1/3/4/6/134647375/8985632.pdfIn PDF document text
    • http://visodesux.iblogger.org/nurijixuwexusevinunazomed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_c27d408ef6864157bb780151dcbb0b1a.pdf?index=trueIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_4ee3306ac534482c9a65236e42613ac4.pdf?index=trueIn PDF document text
    • http://pikazunelovo.epizy.com/bubble_diagram_template.pdfIn PDF document text
    • http://notewewagegev.rf.gd/74421884765.pdfIn PDF document text
    • http://rususekobijo.myartsonline.com/razer_blackwidow_ultimate_keyboard_not_working.pdfIn PDF document text
    • https://77bc4ea4-de20-41c0-a463-a5315db628d9.filesusr.com/ugd/2c69e3_dcae3b7ffe60435cb85dd0c1bfc9b13b.pdf?index=trueIn PDF document text
    • https://a4758657-6aaa-4003-b0f6-1957e800abfd.filesusr.com/ugd/70c1f8_b4b69d92b3304fb6a149290cefaf67ce.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b9408c-861d-4a42-8276-8639dfb97b96/how_much_it_cost_to_pledge_delta_sigma_theta.pdfIn PDF document text
    • http://kinipojip.rf.gd/fujepavadonikojexa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3f7245-75ac-4916-9789-f26c0c60c6d6/mirro_pressure_canner_jiggle.pdfIn PDF document text
    • https://c2dbac7f-2075-4dc1-ad03-af0d0352bff2.filesusr.com/ugd/278743_092cd944b3194f9ea493554d6d5f7045.pdf?index=trueIn PDF document text
    • http://jelunegizubu.atwebpages.com/lewezomaza.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_off00010014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10014 5240 bytes
SHA-256: 65923e75592ab6ad8eccb1f37f8206c61cb49c94081054c54964317793c6404b
font_01_sfnt_off000111ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111ED 10784 bytes
SHA-256: d645bb786ebb2f771958ab198f0b5e4954e0196efff90beeb9d1ffc29ae7f8a8