Malicious PDF — malware analysis report

Static analysis result for SHA-256 73cc084ff6d17f18…

MALICIOUS

PDF

76.8 KB Created: 2021-02-26 17:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0b542dd9fdf11abdb290fbc097bc360e SHA-1: 6ed4365bbe3934ad945979a58bfadd59ec88dc0b SHA-256: 73cc084ff6d17f1894580758fdcad64131ab3c4db0a8c30547528c7ca39a9a92
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/wix?keyword=african+genesis+pdf PDF link annotation
    • https://lupunudarowujak.weebly.com/uploads/1/3/4/5/134599946/8317273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455180/normal_5ff47099b3a28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421957/normal_5fd03402eff5a.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/miss_peregrines_home_for_peculiar_book_series.pdfIn PDF document text
    • http://rankingcoach-seo.com/lemakazazisidefalikekaja2ynun.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/lasesiwamanuw.pdfIn PDF document text
    • https://poginatiru.weebly.com/uploads/1/3/0/8/130874277/ac6530e975ad93e.pdfIn PDF document text
    • https://vuzizakepavojen.weebly.com/uploads/1/3/1/4/131484090/kezexisobowepifuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_60199bb0f3dd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476569/normal_5fe7d9096f97b.pdfIn PDF document text
    • http://infokurs.design/dezevoxijuxufupujexawefom9073z.pdfIn PDF document text
    • http://mebelintera.ru/magagoxesotumezmvgfm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/how_to_fix_a_broken_stove_knob.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/45643849012.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/34963795178.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/pobaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/59932652948.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/visilafivizeru.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_off0000f1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BF 5280 bytes
SHA-256: 8e163179ee2682c51f22652e497545754db63a84593d03f2d95103fd9319991c
font_01_sfnt_off000103c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C8 10196 bytes
SHA-256: 085800f603518004e734828e181f99d51a7c199d622b76cf841c5f369d77a64d