Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ba65ecdcc40a1f…

MALICIOUS

PDF

74.8 KB Created: 2021-03-11 18:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7457368574c51836285fdb9f4121cc5e SHA-1: 1cb6c659982d19c5bda62fcec6f45686884f0187 SHA-256: f3ba65ecdcc40a1fc40beead1f81e2312c930c9d440b29749afcf043f2f73f88
194 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/123?utm_term=dj+auto+liker+free+android+app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385631/normal_603061122d78e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480389/normal_601330ab67a67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_60417f216cb70.pdfIn PDF document text
    • http://dewiwusuxutez.iblogger.org/543101993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378175/normal_6024019572e98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fea293170ed5.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/f6iajde/31717822438.pdfIn PDF document text
    • http://xobopunerubokif.iblogger.org/contexto_social_de_la_profesin_enfoque_educativo_por_competencias.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5fe6eb63a14af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401994/normal_5feea8123197d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486765/normal_5ffa3b3fc6426.pdfIn PDF document text
    • https://cdn.sqhk.co/tememukafosu/XGH1JCh/mad_skills_bmx_2_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416305/normal_601d1e90ead0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_64b9b0ae5f984789beab2de283eb7d9c.pdf?index=trueIn PDF document text
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_6b9f52d2fc494f7f8e470a305ac909a0.pdf?index=trueIn PDF document text
    • https://435a888a-8f80-410d-aa77-77edd6e4491d.filesusr.com/ugd/51fec0_0b1849feb66f4f309182f55ed44d33c7.pdf?index=trueIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_2c4842af12d74c0fb7d2d653fa112cf3.pdf?index=trueIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_84290eab321c49db88de85705bfb6a7b.pdf?index=trueIn PDF document text
    • https://70fbc5f3-53e4-4072-9ff7-a5862d19847b.filesusr.com/ugd/bb3bf9_c200341b1fc441d9b5df1dfe98aca31b.pdf?index=trueIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_4bc18507732f48fcb0c8874439ae8a0b.pdf?index=trueIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_110bb8d307684c2bb3c3adf7b6522ca9.pdf?index=trueIn 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_off0000e7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BE 4996 bytes
SHA-256: 162494c9089773b2b1848a4f94e777753f8cda3a24f254457326c60c2f4c0c6b
font_01_sfnt_off0000f8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DE 10816 bytes
SHA-256: 69b35a3489f20331a4fbc04d788daf4ac79fcf21bed3731c89481f19cd2d868e