Malicious PDF — malware analysis report

Static analysis result for SHA-256 f138f39ccf2a02ac…

MALICIOUS

PDF

84.7 KB Created: 2021-02-15 04:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c48d9d2d5c8336840c8f21c570e343f4 SHA-1: 2474387a3fac15065e0474fed258239fe779c303 SHA-256: f138f39ccf2a02ac5b11345cdc01ec89ab0dc6163cc684ad205ff6652067fb47
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=petticoat+junction+season+1+episode+guide PDF link annotation
    • http://jofijuke.22web.org/hollywood_reporter_newsletter.pdfIn PDF document text
    • http://xodowomasugis.iblogger.org/62362591911.pdfIn PDF document text
    • http://sayfelengs.space/1692340310sqc1d.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/skyrim_ps4_magic_mods_2020fpc22.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/dunodsoxok.pdfIn PDF document text
    • http://reetodo.online/ece_bingo_sheet_osu1ubbc.pdfIn PDF document text
    • http://opit.space/30619459091xnfzm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://baxirogujugiji.rf.gd/design_portfolio_template.pdfIn PDF document text
    • http://zarazemudaseri.epizy.com/microsoft_flight_simulator_size.pdfIn PDF document text
    • http://nepafex.epizy.com/video_song_banjo_by_chester.pdfIn PDF document text
    • http://mopuser.epizy.com/33477635874.pdfIn PDF document text
    • http://govuwetubor.epizy.com/guacamelee_2_ps4_trophy_guide.pdfIn PDF document text
    • http://moferamobonar.epizy.com/2319825096.pdfIn PDF document text
    • http://jupejorix.epizy.com/chhota_bheem_full_movie.pdfIn PDF document text
    • http://wozilololigib.epizy.com/durham_region_recycling_guide.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_off00010491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10491 5244 bytes
SHA-256: d7c330897c115f10e0bda444c5962205f7deebab105dd31d2249b6962a8f30c1
font_01_sfnt_off0001168a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1168A 13304 bytes
SHA-256: a49d4b61b0d582f186b3076d4eb9d1cf8ea5a3282f8ce24c33f777993d5dba23