Malicious PDF — malware analysis report

Static analysis result for SHA-256 205fcda74067b4ad…

MALICIOUS

PDF

71.9 KB Created: 2020-12-23 08:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-20
MD5: c0ccd864bf0e7f3a10dcb7b0b82a7e85 SHA-1: 4f4f548b1dfaad3571cadf72a3ed852ee4b35223 SHA-256: 205fcda74067b4adee6adb0cc3792a22d5472056fc7f083049be1fadd27ecc6e
186 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO spam campaign. The document body discusses web browser history to lure users to these links. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/wb?keyword=samsung%20internet%20browser%20history%20timestamp PDF link annotation
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/7954cfb3bc810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480889/normal_5fda77932b7b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495400/normal_5fd7bf727fac1.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/97538824531.pdfIn PDF document text
    • https://ninozaji.weebly.com/uploads/1/3/4/6/134690112/kalipeladigaka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402517/normal_5f9699ad1edbb.pdfIn PDF document text
    • https://devuxitimon.weebly.com/uploads/1/3/4/5/134596282/3e942bf361056b.pdfIn PDF document text
    • https://negiwonilelif.weebly.com/uploads/1/3/4/5/134583179/wajudofakufibi_kexawasopopizev_gamid.pdfIn PDF document text
    • https://xazulifego.weebly.com/uploads/1/3/4/7/134727283/a0979be530.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/glass_aquarium_lid_20_gallon_long.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000dce1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000dce1.bin)
    • https://uploads.strikinglycdn.com/files/e6d10d61-bb0c-45cd-a88f-8657e4cd7572/40820055903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdd9366f-ebec-41b3-8f0a-8c8ae41a2a4e/lotusukunetomagituw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef0b708-1849-42d3-b4e8-23714e38c01a/wurufetopas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e967cf86-9db1-454a-a348-9fe9997524c7/wotarexuvaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5bdd0f7-34bd-4b97-b2c8-0c701ac05cd9/stick_war_2_unblocked_games.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 extracted file (font_00_sfnt_off0000dce1.bin)

Related samples 4

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_off0000dce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE1 5640 bytes
SHA-256: 7211d3c7c5f30992ebc0c610a9cf9ddff5a6b1999c9808fd48b48c414485a2fe
font_01_sfnt_off0000eff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF7 10276 bytes
SHA-256: b7daeb4fbb96bd410fe52948a4667474730bd33d3c1aae8fb7c3f31e90ee0e99

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