Malicious PDF — malware analysis report

Static analysis result for SHA-256 6604f1c9648def83…

MALICIOUS

PDF

70.8 KB Created: 2021-02-28 17:14:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 25e5834d73d0e03b6bababb1b1c2831e SHA-1: e4b56e092740dc998a5a7da1820b210882eced92 SHA-256: 6604f1c9648def83568eb90492a927e88ff963cd66254885c8ed4cf0fe12e328
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://jumiwimov.ru/award?keyword=ncert+maths+book+solution+for+class+7+chapter+2 PDF link annotation
    • https://cdn.sqhk.co/lupobikud/3Ewhbge/36484840463.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/iglhbhj/3966286990.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_5fd97398031b3.pdfIn PDF document text
    • http://idealsit.fun/68479587453tbpos.pdfIn PDF document text
    • https://cdn.sqhk.co/livaxipovage/igijhhL/trending_tiktok_videos_telugu_2020.pdfIn PDF document text
    • http://wipunemobak.mygamesonline.org/speed_queen_dryer_installation_instructions.pdfIn PDF document text
    • http://mangalvpodarok.ru/kenmore_progressive_canister_vacuum_filter_replacementlrtmu.pdfIn PDF document text
    • https://cdn.sqhk.co/tijovomiv/i72hgfz/food_giant_weekly_ad_adamsville_al.pdfIn PDF document text
    • http://vezerfa.xyz/56082165481zmywm.pdfIn PDF document text
    • http://xofofumireke.mypressonline.com/kubuvilarusupefonu.pdfIn PDF document text
    • https://cdn.sqhk.co/wajewukudino/Kggdgft/interactive_games_2d_shapes.pdfIn PDF document text
    • https://cdn.sqhk.co/nemisova/3Ghgigh/pinozekisukamubova.pdfIn PDF document text
    • http://alfa-quest.ru/plazas_4th_editionxge1j.pdfIn PDF document text
    • http://themarkuzmusic.com/hopeless_colleen_hoover1kcbv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419195/normal_5febd12ae76d6.pdfIn PDF document text
    • http://baliferifopiz.mypressonline.com/58476987151.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/gwGibhc/egypt_old_kingdom_art.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuwididag.epizy.com/sukuwabajimegalexaloni.pdfIn PDF document text
    • http://pulupalu.epizy.com/54078268531.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_off0000d64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64D 5640 bytes
SHA-256: cc2d6e48147534b87b08182e9fd8b4f1c51c2a29913f26432e47b803ff905886
font_01_sfnt_off0000e95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95E 10704 bytes
SHA-256: 21e260c437dae3303c091f6ee60e33e2e8daf0bdc2fefc0c01080a37980979dd

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