Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8831443675dd58…

MALICIOUS

PDF

72.5 KB Created: 2021-02-23 13:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 260da6242b617c46bb5ceae2ec52da04 SHA-1: 3c29f8b7b709c40d6bae31fa010bdce04661104b SHA-256: fd8831443675dd58b6ee4bcfa2b9d6f3a0fd1a5e5d17df4f568b8026683a37f5
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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wix?keyword=jay+z+the+blueprint+2+album+free+download PDF link annotation
    • https://cdn.sqhk.co/gisatajofo/haih3HM/35804011292.pdfIn PDF document text
    • http://blognews.top/66152521766t89xv.pdfIn PDF document text
    • http://jirafka.space/risk_register_constructionyudad.pdfIn PDF document text
    • https://cdn.sqhk.co/livixugakuf/jii0jh4/2_player_fighting_games_online_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368772/normal_6008dc6958ab1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5ffae5cf56834.pdfIn PDF document text
    • https://cdn.sqhk.co/binisomomup/chdVTUG/big_windup_anime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_60341d10668da.pdfIn PDF document text
    • http://stroy-level.ru/24073739817etkkk.pdfIn PDF document text
    • http://13millions.store/wepoxakk2084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_601b42f08bfc9.pdfIn PDF document text
    • http://tradebot.space/tusutubisapenidivugakixpdwul.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/fibNifR/true_football_2_mod_apk.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/stumbling_on_happiness_daniel_gilbernxkiu.pdfIn PDF document text
    • http://raisinshub.club/nelewawedozutyemzr.pdfIn PDF document text
    • http://mobile-media.moscow/20074381308dmm47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/turip/rovebivujaravuselevax.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/zulerezugezonexazu.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/how_long_for_bed_wetting_alarm_to_work.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_off0000dde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE4 5608 bytes
SHA-256: 9dc3b87749f24e4cf3b91283ffe78fc631b96813c002479d3a4aadc3ef3a558e
font_01_sfnt_off0000f0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EE 10504 bytes
SHA-256: 43c27caf3f96ae321d5165cf70f07b1edc0919a3ab8e43f82b4573136e74cf0f

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