Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f1d326e5d81f261…

MALICIOUS

PDF

77.0 KB Created: 2021-03-18 20:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1b379a59f9de34ceb96a7e96953d0ad1 SHA-1: bf894d488fbc81cdc11c9a1dbb529da3150f915f SHA-256: 7f1d326e5d81f2614ef3e968af84c16842dbdfaeebe2dd5bf13b069d15cec118
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of embedded URLs and the overall structure indicate an attempt to distribute phishing content or further malware payloads.

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://ponafet.ru/strik?utm_term=coast+guard+orm+peace PDF link annotation
    • http://bluebadgeform.com/cook_county_sheriff_test_study_guidega9sf.pdfIn PDF document text
    • http://detonic-ufficiale.website/mary_poppins_scriptdipyh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378628/normal_6047d95358631.pdfIn PDF document text
    • http://lukosewikaj.22web.org/new_2019_toyota_camry_xle_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453108/normal_603f881445235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393363/normal_604a287814725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421342/normal_60223e990a3c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454180/normal_601e6f073f390.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/military_pilot_aptitude_test.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/dog_are_better_than_cats_essay.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/qijejiW/loner_lyrics_neil_young.pdfIn PDF document text
    • https://cdn.sqhk.co/palugalanivo/qvkjfif/free_wedding_budget_spreadsheet_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zesugipove.onlinewebshop.net/braverman_test.pdfIn PDF document text
    • https://16012499-1299-48b0-8cdd-5f23a7749958.filesusr.com/ugd/fafc38_4f4a5a5daa954961b6448e7c067eafce.pdf?index=trueIn PDF document text
    • https://6ddb26ad-aa8e-4a3e-a925-5cef6fc035e1.filesusr.com/ugd/d3d820_bd10c427a9774315bb7b90b11907e9b2.pdf?index=trueIn PDF document text
    • http://fujesotes.epizy.com/madilurobobiranagi.pdfIn PDF document text
    • http://ranuvukeguzekiz.epizy.com/baxitaweb.pdfIn PDF document text
    • https://3ae4d138-4ba3-4962-98fb-1b98b40a6a82.filesusr.com/ugd/38062a_93e6ec1273b344afb0b06fa82958a8a9.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_off0000ef2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2B 5264 bytes
SHA-256: 606efd030c2f6de3712ab1cddba7022190fe9f95b9974b2f35758582ef2e4ba7
font_01_sfnt_off000100f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F9 11208 bytes
SHA-256: 432491b2475787d7f7599eee50660942a311577249832f121d516b9bdf9ae014

Open this report in the interactive analyzer, or submit your own file for analysis.