Malicious PDF — malware analysis report

Static analysis result for SHA-256 44aa51c7fd989905…

MALICIOUS

PDF

82.6 KB Created: 2021-02-04 09:58:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8b2875f042d15e83f845e22637cd87fa SHA-1: 18b03484757d2192e62db2adedf193d182dde5c8 SHA-256: 44aa51c7fd9899050dfe20ee8cf3ce84bbac381103c64a1df83cc0da6d196199
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=oil+radiator+heater+argos PDF link annotation
    • https://vixoketos.weebly.com/uploads/1/3/1/4/131453026/nigelogit_tidiser_dofaduxonotad.pdfIn PDF document text
    • http://gsmall.space/nzos_handshake_error_28862en5au.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/AjhjjLN/cut_off_at_the_pass_idiom.pdfIn PDF document text
    • http://fovagenifozemub.iblogger.org/82739759407.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/iVjejgq/50468510041.pdfIn PDF document text
    • http://se-mrush.com/kiss_the_rain_piano_violin_sheet_musicdf22i.pdfIn PDF document text
    • http://misstourist.info/mine_survival_mod_menu2xrw1.pdfIn PDF document text
    • http://reduslim-shop.site/4145601033a31iw.pdfIn PDF document text
    • http://serikanipesemo.iblogger.org/singh_is_bling_hd_movie_free.pdfIn PDF document text
    • http://betixisu.22web.org/pewiwotowate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368777/normal_5ff7c5d90e3fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xelidamos.epizy.com/4723401380.pdfIn PDF document text
    • http://nowuzapifara.rf.gd/certificate_of_appreciation_template_free_publisher.pdfIn PDF document text
    • http://ditiziwux.rf.gd/as_is_bill_of_sale_template.pdfIn PDF document text
    • http://dunuruzofugavix.rf.gd/guduwufefib.pdfIn PDF document text
    • http://losikamadan.epizy.com/96024342174.pdfIn PDF document text
    • http://mupufuten.epizy.com/nikiwexigit.pdfIn PDF document text
    • http://zibozepor.rf.gd/25616258231.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_off00010524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10524 5112 bytes
SHA-256: 28cebde2d39dfbe56fa5c74bbc646ee6689bee2dc9bea43d63070390ec62e4a1
font_01_sfnt_off00011678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11678 11448 bytes
SHA-256: 18a0417e4c43ab75e1d11ed79860825ed0d77cf15d730c699269fbc64dd4d8b8