Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ada22563b665a2…

MALICIOUS

PDF

70.0 KB Created: 2021-03-03 16:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d4e1010c6efd132fd9e3bbd23f492826 SHA-1: 93da715611bd812800c854ea2c09e04e3297491c SHA-256: 54ada22563b665a2ae6ca4ac441f61f146014076497f1e3b89e3b346617f2ba2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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://resalured.ru/wix?keyword=trench+warfare+lesson+ppt PDF link annotation
    • https://kevifuzokidoku.weebly.com/uploads/1/3/5/3/135310888/c63c553a.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/zusasaxuj_vizinovanulevix_fupat.pdfIn PDF document text
    • http://funomixukipiv.iblogger.org/laboratory_design_guidelines.pdfIn PDF document text
    • http://judafipixomet.iblogger.org/rexefevavaxepax.pdfIn PDF document text
    • https://fumadutukit.weebly.com/uploads/1/3/1/4/131437402/3973019.pdfIn PDF document text
    • https://lapedegino.weebly.com/uploads/1/3/4/6/134689006/ff8a2da19cca9af.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/ibCCAtu/vanilla_cake_recipe_buttercream.pdfIn PDF document text
    • https://cdn.sqhk.co/gadujotev/hdfIihH/vapemopivirukumo.pdfIn PDF document text
    • https://sazizilas.weebly.com/uploads/1/3/0/8/130874530/878cb28ba909ba.pdfIn PDF document text
    • https://cdn.sqhk.co/lunabati/a08URii/4008690049.pdfIn PDF document text
    • http://begemot.space/17210005016e1d29.pdfIn PDF document text
    • https://najatiruz.weebly.com/uploads/1/3/0/7/130738831/ribilop_libuza.pdfIn PDF document text
    • https://sebazolilerop.weebly.com/uploads/1/3/0/8/130874482/5356040.pdfIn PDF document text
    • http://astropsychology.website/download_unfold_apk_pro_android8hp8l.pdfIn PDF document text
    • http://jipegogujozu.22web.org/61823748532.pdfIn PDF document text
    • http://kasaxalelari.iblogger.org/34120330226.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/vivolavoji_togogomosaxa_zukotovipawu_junuzido.pdfIn PDF document text
    • http://show-visitor.xyz/37083196232348q8.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/rcjhmje/clash_of_civilizations_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kivazitegolaluz.rf.gd/sacred_geometry_meaning_numbers.pdfIn PDF document text
    • http://nekeromufuribel.rf.gd/how_to_hold_snare_drum_sticks.pdfIn PDF document text
    • http://zogaxogoraf.rf.gd/targeting_mathematics_5a_workbook_answers.pdfIn PDF document text
    • http://zebigibozudival.epizy.com/before_anna_todd_book.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_off0000d779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD779 5144 bytes
SHA-256: cb31a591210bb1e9293d969f9ea1a217772a952ef5496edf7b01cee767a222c7
font_01_sfnt_off0000e90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90C 9840 bytes
SHA-256: ec21bc3243a0e84f540537aa5fe6ec11bb142f7eb4459ef875302c15c2c1cfd6

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