Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1965abed79b4e6a…

MALICIOUS

PDF

68.6 KB Created: 2021-06-08 17:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1d00467b4ead95299ef22ffe6e4a056b SHA-1: 5708bf20661f422f4b90862aea5d05307edd58c7 SHA-256: d1965abed79b4e6a11886429cb4ff7f417a01ba9d008a565405db4e2d52f15e0
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm with numerous external URLs, many hosted on disposable domains, designed to redirect users to other PDF documents. This behavior, combined with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malicious content distribution scheme. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8381

Heuristics 5

  • 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
  • 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://ketchas.ru/wb?keyword=twilight%20saga%20new%20moon%20full%20movie%20download PDF link annotation
    • https://nigelatadumave.weebly.com/uploads/1/3/4/6/134615228/b0183f5824d8300.pdfIn PDF document text
    • https://dopupuwupexiro.weebly.com/uploads/1/3/0/8/130813117/0df284f1fe.pdfIn PDF document text
    • https://xiliwawegumokap.weebly.com/uploads/1/3/4/0/134096460/c10050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501027/normal_5fee721ea0966.pdfIn PDF document text
    • https://nukusiluvo.weebly.com/uploads/1/3/4/6/134612364/8493645.pdfIn PDF document text
    • https://titanukudolilip.weebly.com/uploads/1/3/6/0/136082060/880c7f682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_606a7dd850748.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370989/normal_5fd08876a7bd6.pdfIn PDF document text
    • https://geneferazudim.weebly.com/uploads/1/3/4/3/134362459/6881093.pdfIn PDF document text
    • https://kodabovoxalomas.weebly.com/uploads/1/3/5/3/135340354/jokaguxikim_sukanamurasegux.pdfIn PDF document text
    • https://xomowapiwaliv.weebly.com/uploads/1/3/4/0/134000086/127ca6529.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_5fe78b4ca3769.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/629d4a82-ff22-4d1e-83ba-e69c38a76cb6/72281560149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8b2864-c97c-4b5a-9495-743375c898e8/suzavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab9fe451-3734-4915-92f1-26fb79804a18/17824344718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce8b96c-8b48-446f-90a5-4f40c2078f8e/safotitufixolofujunaluba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/228211c3-09e5-453b-bd6b-e0464a6ed946/79261085303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c27775-2109-4798-9006-724f5d9f446b/manebuxufivosiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccc2a7d1-d394-47c9-a7ee-a8c49631d587/how_to_know_where_to_shade_when_graphing_2_inequalities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e452ee-3402-43ea-99d9-bd66c42b28cb/braun_digital_ear_thermometer_manual.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA26 5328 bytes
SHA-256: 95b417004feac9f79433efa493fd00ecb047809040608ccdfde51f20c32fadb1