Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7992c26d3115b6…

MALICIOUS

PDF

66.7 KB Created: 2021-02-16 13:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 26a0c0ec3185378a1353849adcde2758 SHA-1: cc18dd4182739cab145d4e7cf70a7daeb73d8ca8 SHA-256: 3c7992c26d3115b69156ce5f02b183978d0f57710dca8800653b77e3b722f407
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=death+note+another+note+pdf+vf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450240/normal_5feb7ba58b2bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_5fe96cf292ef8.pdfIn PDF document text
    • http://znasila.ru/12503717712slu9.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/fanatic_armor_niohs34rh.pdfIn PDF document text
    • https://xezatitewifesel.weebly.com/uploads/1/3/4/3/134393938/fulisobagux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_601fc8ef9cba7.pdfIn PDF document text
    • http://forexgeeks.net/nuclear_bomb_chemical_definition20lt9.pdfIn PDF document text
    • http://tramlaweq.online/48670152454aaoq5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499351/normal_602ac8a869630.pdfIn PDF document text
    • http://servisvds.ru/restaurants_near_cross_roads_txslbv0.pdfIn PDF document text
    • https://xifalazixaxidig.weebly.com/uploads/1/3/0/8/130874217/a2cba1ff6.pdfIn PDF document text
    • https://koxowugazetumul.weebly.com/uploads/1/3/6/0/136015765/rosikavegika.pdfIn PDF document text
    • https://fanakigefepawaf.weebly.com/uploads/1/3/0/8/130873796/2570626.pdfIn PDF document text
    • http://creditreportus.info/10960063076psw1r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409610/normal_60049a5635845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5fe63a4b41fd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393486/normal_5ff409ebc60a1.pdfIn PDF document text
    • https://jimedugevebuz.weebly.com/uploads/1/3/4/4/134437071/golepekerumisewozeti.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/fakuguvil/evensong_responses_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/birthday_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/97726683226.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/describe_your_dream_job_tour_guide_ielts.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_off0000ca6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6D 4976 bytes
SHA-256: caeadeddc876e4e82f07295f3c78185b4bc1306d106a5baaa52d30aec7424c5d
font_01_sfnt_off0000db65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB65 9984 bytes
SHA-256: c187bd04bbe9b9eb9090bd2eb2d34fe3cd5adb302c4a44d1c00c392b46acc650

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