Malicious PDF — malware analysis report

Static analysis result for SHA-256 836759ac96df6b30…

MALICIOUS

PDF

85.7 KB Created: 2021-03-20 08:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 017675fd0eadeef616d188e0165b00f1 SHA-1: 952ef843b5b0acccaa6cc06d063bf7a03a128c4a SHA-256: 836759ac96df6b303812ccd5be0edd35e39ee9e70eebbe599701a5d404fbddbe
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The embedded URLs and the heuristic firings strongly suggest this document is part of a phishing campaign or a downloader for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://golowaki.ru/wix?keyword=hunter+pvp+guide+tbc PDF link annotation
    • http://remont-kholodilnikov.website/54817949557791wl.pdfIn PDF document text
    • https://nofabirudop.weebly.com/uploads/1/3/4/4/134455392/0a945b53f571b1.pdfIn PDF document text
    • http://prosale.company/45181053726ry0u9.pdfIn PDF document text
    • https://cdn.sqhk.co/bemememu/gj10iif/40934153193.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/information_report_rubric_year_1.pdfIn PDF document text
    • http://wegansit.space/art_master_summoners_war_firejpxs1.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/idqIX3W/tom_and_jerry_movie_2021_twitter.pdfIn PDF document text
    • https://jupedozezuwobig.weebly.com/uploads/1/3/4/0/134040413/nagezolu.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/adm_apk_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/lease_agreement_template_indiana.pdfIn PDF document text
    • https://xikemusuvef.weebly.com/uploads/1/3/4/3/134322181/vuzizenuxewu.pdfIn PDF document text
    • http://vladport.ru/kofijobinaliremozejalako6m7f9.pdfIn PDF document text
    • http://salet.store/72615647051kck6b.pdfIn PDF document text
    • https://cdn.sqhk.co/xokipuxat/fhA3jcq/gikugujunidaderopep.pdfIn PDF document text
    • https://pawizujepus.weebly.com/uploads/1/3/1/6/131637171/baxawupabepiku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b42dfab6-8227-42c4-8fe5-fc04d9433513.filesusr.com/ugd/a9a8df_6887ec77f2f84e329602653bb953a08d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed8bc0d-2d39-4300-89d3-16b02ee07d40/6476530147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1bcc983-78d1-48d1-b30e-72611bec76d6/1224639032.pdfIn PDF document text
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_63c20ce17a1542a1b602b274e815262b.pdf?index=trueIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_349d0c08b12c4522973b188f3f5b6ced.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f26f499e-5806-4bb8-b6e8-c6ffd152052a/wufenuwukaraxojetad.pdfIn PDF document text
    • https://c245485c-e1a4-4c5a-9a2a-c465a95e53c8.filesusr.com/ugd/25f824_88ccc0b9431242a081746b8c83fc79be.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f8022a-9df8-4aca-a219-8bbc2f348833/how_much_does_a_full_detail_car_wash_cost.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_off0001113d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113D 4980 bytes
SHA-256: 38e3e4d992da967f777a37879bd28605001705a400ade9740a4f9c4a7987c563
font_01_sfnt_off00012245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12245 11552 bytes
SHA-256: 7c234ac6fd4660b8659bd60342db784c6f6b253bcc38579602ec9d9e2c1d6883