Malicious PDF — malware analysis report

Static analysis result for SHA-256 5603d978ea54e44d…

MALICIOUS

PDF

81.0 KB Created: 2021-03-14 04:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61c6047614950c4ca16825584e5e3bc6 SHA-1: aa821ddccfa0e4a690bc4cbf288be140c27bf6de SHA-256: 5603d978ea54e44d75cb890c5aa2bb0db4a2018a080090f1273a76b0aad88cd5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/award?keyword=la+caida+del+imperio+romano+goldsworthy+pdf PDF link annotation
    • https://cdn.sqhk.co/nuxarufodir/PhcjYCn/onslaught_carnage_dayz.pdfIn PDF document text
    • https://vonosupaxeme.weebly.com/uploads/1/3/0/7/130740497/9255788.pdfIn PDF document text
    • https://cdn.sqhk.co/bexuxoxabim/UijHCgd/55172833401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503617/normal_60216b78196e4.pdfIn PDF document text
    • http://creditscorefix.info/sql_server_inner_join_left_join_performancemcc18.pdfIn PDF document text
    • https://cdn.sqhk.co/xufuwejaxe/hhhjzgj/facts_about_kobe_bryant_wife.pdfIn PDF document text
    • https://cdn.sqhk.co/zikonidenijo/dnziJ37/nizexosidusinusuxadan.pdfIn PDF document text
    • https://cdn.sqhk.co/nejisakatok/cutkTc3/67757259815.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/PRTh6ii/kifivudexi.pdfIn PDF document text
    • http://naturwows.space/416396365005stj5.pdfIn PDF document text
    • https://cdn.sqhk.co/jifegusewe/hdiikgi/nikijurezimepibepavima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_602e5655e41ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387232/normal_5fc85cb396977.pdfIn PDF document text
    • https://cdn.sqhk.co/bobofibu/Iico4Cx/lynx_cat_pet_youtube.pdfIn PDF document text
    • https://nanopimage.weebly.com/uploads/1/3/1/3/131398258/623969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_601538d047f7c.pdfIn PDF document text
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/d21bda07dca.pdfIn PDF document text
    • http://reactivaperu-2020.com/694113400044781g.pdfIn PDF document text
    • http://pr-bux.online/reaper_miniatures_paints86en.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://c81c1a69-aec6-471c-ac34-7a6800eafc69.filesusr.com/ugd/9ef1ea_45caaf06282c4c3b9eccc8407924ce84.pdf?index=trueIn PDF document text
    • https://67d298e0-85f4-4ad4-bf36-e1ac857e42fc.filesusr.com/ugd/b6bf5b_bf96dadb0a8b45909b0f1aec4f798251.pdf?index=trueIn PDF document text
    • https://7b9449e5-51e9-4a7e-81f5-8587c42320f9.filesusr.com/ugd/571bad_a84cf7afb61146d8b5cccc961e55c49a.pdf?index=trueIn 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
    • https://doi.org/10.5944/etfii.23.2010.1781In 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_off0000ea45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA45 5492 bytes
SHA-256: 8414abe2e621b731aba979ca60ebc84e9d1e2b0ae915e75f46477deed3a8abf6
font_01_sfnt_off0000fcd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD1 12792 bytes
SHA-256: fd771f23c5f99e6aa5a04f8732573a170e9ad2067e47c01e46b4ff4c769d6220
font_02_sfnt_off0001260a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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