Malicious PDF — malware analysis report

Static analysis result for SHA-256 5297af0f82305cc3…

MALICIOUS

PDF

66.5 KB Created: 2021-02-24 13:28:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 70798a621369d0bb38bceb15067bc6fd SHA-1: 89166c3784ac91802eb86c4d2aae29b43fb6a32d SHA-256: 5297af0f82305cc3771e1bdad256c04252d68c3885587b306dc10c4c877a3761
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely a phishing lure disguised as a Black Friday deal. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/strik?utm_term=walmart+tcl+55+inch+tv+black+friday PDF link annotation
    • https://cdn.sqhk.co/poronujefino/uijhbgf/wozisavufewinilireriro.pdfIn PDF document text
    • https://cdn.sqhk.co/vefoveted/jfyrC0I/20137498511.pdfIn PDF document text
    • https://cdn.sqhk.co/tinodifozeza/5hcQ7U8/26616096084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_601362de0ef34.pdfIn PDF document text
    • https://cdn.sqhk.co/miraroki/8ghgfge/85357127191.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407086/normal_5ff4488dcc7ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_601b7dca8a387.pdfIn PDF document text
    • https://cdn.sqhk.co/sobupepokor/ifagg0E/ortega_horse_kick_pro_digital_stomp_box.pdfIn PDF document text
    • http://fivabigenarewo.22web.org/bonoxewu.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/gjbwjfo/dining_room_table_sets_seats_6.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/WjcCaw3/diamond_diaries_saga_apk_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455377/normal_5fe230f9a90c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481516/normal_60026aa1bd2f4.pdfIn PDF document text
    • https://cdn.sqhk.co/bivosozos/eljaLVp/86016867118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388598/normal_5ff96bb4088f8.pdfIn PDF document text
    • http://mexuzekinukogip.iblogger.org/what_is_great_depression_class_9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49C 5584 bytes
SHA-256: 57831dc407985096dc9ceb414ca931c1a928af77cfcdb38504d0d5883623ba95
font_01_sfnt_off0000d78d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78D 11016 bytes
SHA-256: 8fd991fa8eb0cc66f40e215d0f7f06c320694746764dcd64f90e86967b475efc

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