Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfd6b9bbf0aab37…

MALICIOUS

PDF

78.3 KB Created: 2021-04-17 09:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 80ec897cccd2df00fbadeb15b47fa2bc SHA-1: 91e059c673b38f7548189f6215488bb808fe5bca SHA-256: 3cfd6b9bbf0aab372035048108c504845885d7cebf886d0ed4397815d734a39a
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by an ML classifier as malicious. It contains an external URI pointing to 'ponafet.ru', which is suspicious. Although no scripts were explicitly extracted, the presence of an embedded URL in the document's metadata and body suggests an attempt to redirect the user to a potentially harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://ponafet.ru/strik?utm_term=stanley+sharpshooter+tre500+shooting+multiple+staples PDF link annotation
    • http://ruzazeruduzelu.22web.org/51018832410.pdfIn PDF document text
    • http://floradoma.net/bibawiwa290l2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_6017a3f3ce869.pdfIn PDF document text
    • http://titoto.xyz/pidor6xz7p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458840/normal_5feb179b2301a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384155/normal_605020151c125.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_6060e4ab0a164.pdfIn PDF document text
    • http://idealica-italiaoficial.site/268689010101qgs5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460231/normal_60562b9eaaa4b.pdfIn PDF document text
    • http://kekebum.22web.org/kesonapakakigebato.pdfIn PDF document text
    • http://pivowave.iblogger.org/nitto_atp_finals_draw.pdfIn PDF document text
    • http://igme.site/44804582928p23ib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465387/normal_5fcfb07dedf6b.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijivip.rf.gd/fagles_antigone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a568222-3b71-4815-a34e-2e0ce86e2fd2/geralds_game_book_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7dff844-5bf1-4c65-93c5-953b84087263/god_is_my_redeemer.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

Related samples 8

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_off0000ef25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF25 5704 bytes
SHA-256: 453fdb879fd5e699cc1cb922183df4891ba7b59db92affc4c87da11f4569b77a
font_01_sfnt_off00010271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10271 12476 bytes
SHA-256: a2daf186bff248053ca20c051427d3a284243cb5ee735ac21da3455504576cc1

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