Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae331bdb5275e467…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 12:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7e30cbd0126a611c8a0911c743989d35 SHA-1: 598fcdde3a4cd1d469cb2e8b86374d86805181fb SHA-256: ae331bdb5275e467a2dcaf40f0b44286dd74dbd771831db7d5e0f94a9794b382
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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/award?keyword=how+to+stick+vinyl+to+a+cup PDF link annotation
    • http://nejevefivi.mypressonline.com/planet_fitness_sign_up_fee_2020.pdfIn PDF document text
    • http://talakam.space/73441121332mpdjk.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/lpi_linux_certification_study_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/47gfMgn/dune_release_date_2021.pdfIn PDF document text
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/2ca47450db46.pdfIn PDF document text
    • http://wide-mean.top/uglies_book_sparknotes8e07w.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/a1gicEw/fuxubesuxoligokuzifanam.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/hngfhhA/66035972868.pdfIn PDF document text
    • http://whalesqpa.fun/free_download_of_without_love_by_jessica_steele3i649.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/70404981237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sipanokule.onlinewebshop.net/16432663159.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/10973239425.pdfIn PDF document text
    • http://bitines.myartsonline.com/56757115439.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_off0000e026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE026 5108 bytes
SHA-256: bf85de027b409489f7251ad53e5fdf63398502948367f07ae21a146cee4d7706
font_01_sfnt_off0000f1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C2 10412 bytes
SHA-256: f67c9bbbafd9d29e564fb9330a10ce5f0ddd6ada54b14b70ebc9e406f48479b4