Malicious PDF — malware analysis report

Static analysis result for SHA-256 064f2be9cd172231…

MALICIOUS

PDF

83.8 KB Created: 2021-05-07 10:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 66dc016014b5449f72a3b60d335844f7 SHA-1: 5a4cbe9d24294181c4ba226b7be3d1b72c4c9a70 SHA-256: 064f2be9cd172231272ad3915e09b92b879e27b7bce05879b5591f367057d009
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=logitech+x100+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413719/normal_6068acb0e5937.pdfIn PDF document text
    • http://vopibuxipem.22web.org/90710520235.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476751/normal_6013a8b2e6860.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_60034f00975fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408004/normal_606396649f654.pdfIn PDF document text
    • http://fawikenaxalu.scienceontheweb.net/worujorigagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://legolipif.epizy.com/seismic_data_analysis.pdfIn PDF document text
    • http://vujesidewu.rf.gd/8_effects_of_water_pollution.pdfIn PDF document text
    • http://kotalozobazad.rf.gd/musica_moreninha_linda_tonico_e_tinoco.pdfIn PDF document text
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_bab892ae68ca40dcb4bc348c0feb549a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fezenur/sql_server_report_builder_tutorial_video.pdfIn PDF document text
    • http://farudigenudoze.onlinewebshop.net/82916965010.pdfIn PDF document text
    • https://4f640d82-8365-4c22-93d6-dbd3427c3fb0.filesusr.com/ugd/55e8b7_4e2e4b101fed448793f69049b2985485.pdf?index=trueIn PDF document text
    • http://wetavirevamo.epizy.com/90448825077.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/como_crear_un_archivo_gratis.pdfIn PDF document text
    • https://334e481f-4595-4613-8514-cf1b68b0f675.filesusr.com/ugd/a5bb32_70de41afa37546d1b3a1dde06ee19847.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/18528391423.pdfIn PDF document text
    • http://jalijoruki.atwebpages.com/32435989175.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0C 8772 bytes
SHA-256: 61c3b6a47c13edffdd6ecfe0b964e593963336e8f9d9cdb03f78a0fe72ea9012
font_01_sfnt_off00010678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10678 5140 bytes
SHA-256: 4a642c7c29dbc2bbeca26b00a322c6cc69dc3acc8562bc5347d5ba3eb0f787cf
font_02_sfnt_off000117e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 12648 bytes
SHA-256: 18611a5a68ea889d04cf29e9736eb4de0c5a1b0d9ee54a21f966a18d4358fe14

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