Malicious PDF — malware analysis report

Static analysis result for SHA-256 916de8c02f69494f…

MALICIOUS

PDF

72.2 KB Created: 2021-02-16 22:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8f0a471c499dc7ccb9fb802225b59983 SHA-1: 5f4603bac9d366e1bb2172a77f8b784c70187a03 SHA-256: 916de8c02f69494f9cb2af0ff7b7ecd9bc7c55ce045d4677f2c03fa38f8b4cb8
126 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
  • 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://leonvi.ru/wix?keyword=2014+ap+computer+science+free+response+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466140/normal_600f5bfa1f64d.pdfIn PDF document text
    • http://natural-shop.info/contractions_worksheet_grade_6b596u.pdfIn PDF document text
    • https://cdn.sqhk.co/pevedapev/7cg9gfC/best_rope_knot_for_porch_swing.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzosiboweja/Q6wjchW/dukeriti.pdfIn PDF document text
    • http://maxist.ru/viwimogazefinidas0c6kl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479226/normal_5fd8268e7f3a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418197/normal_5ff96d80c8053.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/icVMgc3/funny_love_status_for_whatsapp_in_english.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/gidatizogodobiz.pdfIn PDF document text
    • https://jusodizepo.weebly.com/uploads/1/3/1/0/131070216/xakupadotaka_gerik.pdfIn PDF document text
    • http://fortuneo.best/defagunejitajadidafowokp2p3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375209/normal_5fee18d9d05a0.pdfIn PDF document text
    • http://idclick.cash/51181939374me4av.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_5fe62f21166be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447271/normal_5ff7729b5847b.pdfIn PDF document text
    • https://cdn.sqhk.co/bowazeduz/f6giteO/miruxowenife.pdfIn PDF document text
    • http://tb-films.ru/5067063805266nly.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375339/normal_6001f44b9d7c4.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_off0000dc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 5540 bytes
SHA-256: 202412aa22606abf0df7ab12f649b374351d8920ba97902b25453018d38d8429
font_01_sfnt_off0000ef70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF70 10508 bytes
SHA-256: e66d108b63de50d828d9aea335b10def6d8ab8988810aa367963d3200b352f02