Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0a76d973d2b6b23…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 13:51:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7a1aeb70f5ba587c4833a29c0b105748 SHA-1: aeb9baf19519657a902d72dc96457ff3bbc9103b SHA-256: f0a76d973d2b6b236f930c02e3c96cefd2d976b5d7f9269dbf2126d75d13d1cb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=ariens+snowblower+manual+824 PDF link annotation
    • http://kirakexig.mypressonline.com/78626858278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470221/normal_6036c2cbc0965.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422640/normal_5ff3abc4841e1.pdfIn PDF document text
    • http://madamzero.com/56447155319dehpb.pdfIn PDF document text
    • https://gibinebixupiv.weebly.com/uploads/1/3/1/3/131379057/visasubimen-jegab-bupawi-madus.pdfIn PDF document text
    • https://cdn.sqhk.co/mutobudenit/iggijax/xufunirekomidodota.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412767/normal_5fee549d63d0a.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/hjbphet/crazy_car_traffic_racing_apk_mod.pdfIn PDF document text
    • https://vesifumami.weebly.com/uploads/1/3/5/2/135294942/839521.pdfIn PDF document text
    • https://cdn.sqhk.co/datimemovuko/iAFhhhi/371227599.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/pdf_el_juego_de_la_vida_y_como_jugarlo.pdfIn PDF document text
    • https://cdn.sqhk.co/zarepowake/iagejjK/wimejojaz.pdfIn PDF document text
    • https://fuzitadixasixo.weebly.com/uploads/1/3/1/3/131381677/kigim.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/d097e.pdfIn PDF document text
    • http://qwertyujg.xyz/10250211039c9156.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/bEAuZWV/barber_shop_nyc_upper_east_side.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/dagis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD592 1740 bytes
SHA-256: fc09d8f6e514d4a52b6ca6707abc98f6bb514b56e1343736c90dd08c405b3197
font_01_sfnt_off0000de13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE13 5468 bytes
SHA-256: cfde8634046093df464e4392373d30060139228821a685688ca4fedd2784a46a
font_02_sfnt_off0000f0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A5 10380 bytes
SHA-256: 682431c4790df1fa645ca64e10005a44b06703c75ec5ecb6eec093ee89b3b01d

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