Malicious PDF — malware analysis report

Static analysis result for SHA-256 83db1a3a48cc592f…

MALICIOUS

PDF

73.7 KB Created: 2021-03-13 20:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 386de754aabb7385bd00dfb8d6f7e3c3 SHA-1: 7eae845fbc5022d099b805f546797cc983f2a119 SHA-256: 83db1a3a48cc592fa4d3c11462efd8a7aa3ff644063c99418ac399f578c03279
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicative of a link farm or phishing operation. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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 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://xezojetit.ru/award?keyword=mariage+d+amour+piano+sheet+pdf PDF link annotation
    • https://cdn.sqhk.co/xarozowuzosa/jdNShae/multi_stream_youtube.pdfIn PDF document text
    • http://sis-paypal.com/barrett_jackson_2020_schedule_west_palm_beachxj4ce.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/3vhdCgc/racing_go_karts_for_sale_houston.pdfIn PDF document text
    • https://cdn.sqhk.co/nefikelifu/ijajjhi/junekamumaju.pdfIn PDF document text
    • http://sekujirimabasas.getenjoyment.net/pdf_editor_multiple_pages.pdfIn PDF document text
    • http://feelslike35.com/the_gender_game_bella_forrest_epubkkvje.pdfIn PDF document text
    • http://bizifemodefi.mygamesonline.org/45804823849.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/jejeVje/icao_annex_6_part_1_free.pdfIn PDF document text
    • http://gisujug.mypressonline.com/simple_python_project_template_github.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/ggeO9Ol/lufemiwavovabakuko.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/BZFhcje/troll_adventure_mod_android_1.pdfIn PDF document text
    • http://creamwalls.space/watakexisemisuxakibu5frgs.pdfIn PDF document text
    • http://pycnidwzxc.info/653072246259l0w9.pdfIn PDF document text
    • http://trokot-shtorki.online/42026279714sy5kz.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/fwijZgf/tuxev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://87c8fc71-818b-4167-bf0d-2ac3bc49ffd1.filesusr.com/ugd/f9d4cd_61bfcf5be22a40fbb679804193eb6374.pdf?index=trueIn PDF document text
    • https://19f621d4-ab03-49b5-bf1d-c78de40104d4.filesusr.com/ugd/bc84a3_a56ccd6990ab4233b6890d3cfbf5b7f9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9c3e692-2240-40f3-8b54-dd1266af9a2b/wavubuxatobuligazasiwuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d276812-ac40-4987-af66-c3e1d3319044/95652369973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ecf40d3-bcd0-43c5-8bf7-4ba3c030d21b/metal_gear_solid_4_ps4_gameplay.pdfIn PDF document text
    • https://1482387f-61d8-47e1-b538-9b7f1e8b89fb.filesusr.com/ugd/538d67_26a7a7d298504b6cb103d1339520e96e.pdf?index=trueIn PDF document text
    • http://zejibanunepi.myartsonline.com/star_trek_picard_story_leaked.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/jajer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a98baef-2a13-40b5-8be9-023a113cf5eb/que_es_mecanico_industrial.pdfIn PDF document text
    • https://19f621d4-ab03-49b5-bf1d-c78de40104d4.filesusr.com/ugd/bc84a3_12b099fc3c884382904d401773225efa.pdf?index=trueIn PDF document text
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_52156d84be14446f970cb0af6b87c159.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3538b16d-6539-4a8d-87a3-4918004296bf/agile_estimating_and_planning.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_off0000e189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE189 5428 bytes
SHA-256: e55e16d98d066178821b4ae1ed8512e5c24558bf457dbc2ecf47292f6b532db6
font_01_sfnt_off0000f3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E1 11148 bytes
SHA-256: 239275837609b37daf4c0a5ea48c33802a22edd9bcaf535ea09a887bed0478a9