Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed932ed1bdd4720b…

MALICIOUS

PDF

73.5 KB Created: 2021-03-26 14:02:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 867d3cec4e4f8c23d551898c872b1109 SHA-1: 9693e9eb10dfd18a12b471f684b42f5d1100b25a SHA-256: ed932ed1bdd4720b519b6f75b42ff58f41fdbe5eac68f9db510d4343bd537b0b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=why+does+my+lg+washer+not+drain PDF link annotation
    • https://nafizanoride.weebly.com/uploads/1/3/4/5/134596231/kekuxulevuxaz.pdfIn PDF document text
    • http://ecosbor.net/why_is_my_computer_not_charging_when_plugged_inshzom.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/cfmhuyV/mad_dex_pc_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_5ff5822f80bde.pdfIn PDF document text
    • https://lebipogife.weebly.com/uploads/1/3/5/9/135990957/96e413d.pdfIn PDF document text
    • https://tuxufinuzeleki.weebly.com/uploads/1/3/4/7/134737217/2459623.pdfIn PDF document text
    • http://stikc.xyz/xobenubks285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_5fd639a580290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377381/normal_60229f22cc515.pdfIn PDF document text
    • http://nat-fru.space/joanna_thomas_pornzusi3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466140/normal_605817d9d0e92.pdfIn PDF document text
    • http://deutschebank-meine.com/eclipse_c_windows_10xthb2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366630/normal_5fc6b2689b36c.pdfIn PDF document text
    • https://fapopadiwa.weebly.com/uploads/1/3/1/4/131438416/7646999.pdfIn PDF document text
    • https://titugujogimob.weebly.com/uploads/1/3/4/0/134017720/416916882098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_602411cc75865.pdfIn PDF document text
    • https://cdn.sqhk.co/zamepeja/itghghs/piano_keyboard_notes_for_kannada_songs.pdfIn PDF document text
    • http://drenajkrasnodar.ru/14329138327dci2g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5fe182382b138.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/hdgUig2/allocine_tenet_paris.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480149/normal_5fd23bd550cad.pdfIn PDF document text
    • http://discount50.pro/vaxezas1v5xw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08C 5448 bytes
SHA-256: 7c9b2f736790935a889bc23413df075cd05953ff23e02b0f131a3edbfcfd78c4
font_01_sfnt_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 10992 bytes
SHA-256: 52dae284d093dd0726654d0bce0a8cafc30d68e994f450ff0e2eb8e490ce633a

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