Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1147e9e97fc2793…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 03:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f59d7865bbdbf2f2348d9d845dfcad3c SHA-1: cf3a28703ab7ba1bf03d0662310a5db2c9eb3cf6 SHA-256: f1147e9e97fc2793b24f64b2d52fa3a7bd13c9857c838a6799f71f2aae8c69cf
184 Risk Score

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
  • 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://crophysi.ru/wix?keyword=hamilton+career+center+seneca In PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/9141440.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449771/normal_5fec453321ad6.pdfIn PDF document text
    • https://narapafugoziror.weebly.com/uploads/1/3/0/7/130775848/senizaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469623/normal_5fdb20c3a5287.pdfIn PDF document text
    • http://arenaprobet.com/aimsun_8._2_manual66vm1.pdfIn PDF document text
    • https://kobetuditi.weebly.com/uploads/1/3/4/4/134446504/wuzovujanamoguzimej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494431/normal_5fdbaaa71a73b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388060/normal_5fd86861a56d1.pdfIn PDF document text
    • http://rotixumuzu.22web.org/45124087996.pdfIn PDF document text
    • http://italiabeach.space/6325034835anmu3.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/bjdLRjh/mifonepad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476302/normal_5fe612879f7aa.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/cjgxe4i/zombie_hunting_simulator_codes_2020.pdfIn PDF document text
    • https://pujowuvorokom.weebly.com/uploads/1/3/5/3/135347933/dapekukod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486353/normal_5ff538ddb3371.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5fc8763cd2cfd.pdfIn PDF document text
    • http://tatalenusonivo.22web.org/kakashi_ammini_pilla_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_5ffefdb0cd08d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofapubuwuleto.epizy.com/adwcleaner_link_safe.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_off0000df6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 4908 bytes
SHA-256: 381516d406e780ed22bae68291e6ce4405f2a47fec62ddaee67f0e68d67c5ce5
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 10644 bytes
SHA-256: 51e280786ea27ce3384d95ddc6f33c1869a939d06e917e1bd2959e629ef9a26a

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