Malicious PDF — malware analysis report

Static analysis result for SHA-256 3441eec3a730b0d9…

MALICIOUS

PDF

72.6 KB Created: 2021-03-19 07:34:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ab65b6ec2713822bbef3131793715b59 SHA-1: 1c5005d421f739c26ba1b47cb23c30b190a9b96c SHA-256: 3441eec3a730b0d98532916e304aa08cadf4122c185048275162d25ba1630a61
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/award?keyword=historia+de+los+adventistas+del+septimo+dia+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424328/normal_6028b29dce28d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374689/normal_5ffd3077a11c3.pdfIn PDF document text
    • http://gawudubigojan.getenjoyment.net/navukos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_60394fed428ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464053/normal_6012620a64286.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_60431f3676f14.pdfIn PDF document text
    • http://fudoviwil.mywebcommunity.org/40837108913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_60531e1642ca0.pdfIn PDF document text
    • http://gutaferu.22web.org/clash_of_kings_mod_apk_unlimited_everything.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446035/normal_60443e5a84fc8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450340/normal_5ff418db8bd43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454809/normal_603568c16aff9.pdfIn PDF document text
    • http://figuxovutofid.mygamesonline.org/dapepofol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_601fb100aed7e.pdfIn PDF document text
    • http://rinujajija.getenjoyment.net/18461043715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448328/normal_60443b83b0e79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489981/normal_5fed95ee7392e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa880baf-2743-4245-a7d6-e3298a3a9856/34490162899.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06f5a9d-d342-441e-b8e5-1391a455d72a/vujulujebisagosi.pdfIn PDF document text
    • http://xijivip.rf.gd/nombres_de_jehov_en_el_antiguo_testamento.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3378da9e-f0d1-4f59-8f3c-4fdf6cebf249/89063557850.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/kitchenaid_stand_mixer_white.pdfIn PDF document text
    • http://kinugokapa.rf.gd/vuxorotatozew.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_off0000dfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 5208 bytes
SHA-256: 579e37ce39f38cd69864f13db4d6b0819ab3027fdb98c8f3d7bb759c89d786f4
font_01_sfnt_off0000f17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17D 10480 bytes
SHA-256: 4ee4f9022031b7f5e5ae241dc155bb259a8107d7c4abdf9d5fb68c2e066eca3c

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