Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c30710045ebde5…

MALICIOUS

PDF

69.4 KB Created: 2021-04-04 14:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6d6f7ab4c83147e0389f6cf5a577235a SHA-1: 26cb75d19da21f00af6dea931499c7b88ca30528 SHA-256: c0c30710045ebde575a91a6b22a84d15e30f230a4fffc3b2e9647f7d6700f49f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to reference product details, suggesting a lure for phishing or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/strik?utm_term=apple+iphone+5s+leather+case+brown PDF link annotation
    • https://cdn.sqhk.co/rujojumex/8jdJjd8/zewexusisafamomenowoze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464873/normal_5ff13cd4ab20a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384649/normal_605264fc0aec8.pdfIn PDF document text
    • http://aov.one/fipufusaziwamatef31dfw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473963/normal_5ff0cd135ca7e.pdfIn PDF document text
    • https://cdn.sqhk.co/givifevulo/Cicijgf/wizz_airlines_phone_number.pdfIn PDF document text
    • http://zubiki.top/516053232146lv77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387712/normal_60066993888b9.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxazigozo/gfiKSrr/12168969819.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/jhhgfgf/xowetofe.pdfIn PDF document text
    • http://igcopyrightforhelps.com/311667878275a1eh.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/fhiFaB1/metawujo.pdfIn PDF document text
    • https://cdn.sqhk.co/zevijevam/Yt5hage/upcoming_warhammer_ios_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446651/normal_5fce74b67e735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464702/normal_60210d84b7344.pdfIn PDF document text
    • https://cdn.sqhk.co/vekunego/0idjaQZ/93145945186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5fd369bc88317.pdfIn PDF document text
    • https://cdn.sqhk.co/pemazekefise/RghjLja/hitman_go_apk_and_obb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/nukopazarinona.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/43895740335.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/how_to_reset_asko_dishwasher_d3121.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/pagusunog.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/manual_de_organizacion_de_una_empresa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F1 5368 bytes
SHA-256: 92f4dbb3f7b010817f4ef0153dfab81a5c5308b3144c869419ead54621dead9f
font_01_sfnt_off0000e43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43A 10536 bytes
SHA-256: d580b1ba1aac7f7182a20f4bf4e278051c1513114bd7d2536c1fb236341680ee

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