Malicious PDF — malware analysis report

Static analysis result for SHA-256 029e9d4ad39765f3…

MALICIOUS

PDF

75.7 KB Created: 2021-03-31 08:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e23b6ba236b58222bc11e0027684e4ad SHA-1: b26855045746a9d3514fbd329d38ab62dcdc10a4 SHA-256: 029e9d4ad39765f3bf18b6a7ded7d28b451ae5bf425ca282c0fc9a4504b7e4a3
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=midnight+sun+full+movie+download+in+hindi+480p PDF link annotation
    • http://sukutoxuwurif.mywebcommunity.org/bohemian_rhapsody_sheet_music_simple.pdfIn PDF document text
    • https://zumekaxiligub.weebly.com/uploads/1/3/5/3/135385258/jogosowugova-mapudojigo-ruwafizikote.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/52357554861.pdfIn PDF document text
    • https://reropazorulofo.weebly.com/uploads/1/3/4/4/134437501/pelutujuwuworexez.pdfIn PDF document text
    • http://raponikidosal.getenjoyment.net/74293026000.pdfIn PDF document text
    • http://wutopezogegusi.getenjoyment.net/loxetozetitofifu.pdfIn PDF document text
    • https://zexotanus.weebly.com/uploads/1/3/0/8/130873712/beramexor_tolarabej.pdfIn PDF document text
    • http://jisuvakuwiraza.medianewsonline.com/zugitotelivobiz.pdfIn PDF document text
    • https://xepezexitig.weebly.com/uploads/1/3/0/9/130969834/3494654.pdfIn PDF document text
    • http://kovexuxufolaz.iblogger.org/concerto_for_2_cellos_in_g_minor_rv_531.pdfIn PDF document text
    • http://padulima.22web.org/the_great_hunt_ffxiv.pdfIn PDF document text
    • https://ranalugepileli.weebly.com/uploads/1/3/4/7/134735155/rabon-zawad-tuwodoza-gosizuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xutojolalu.epizy.com/64890731595.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/battle_ground_3d_free_game.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/hardwood_plywood_sheets.pdfIn PDF document text
    • http://kalogoraretupo.epizy.com/plaid_flannel_sheets_queen.pdfIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/garemoferuvixisufaromisop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40e00f1b-31c4-4c70-99dd-bb1e6d30e5f6/ferrari_458_speciale_aperta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79320aa2-a50b-4424-ab5d-5bc5d4e88b5c/tulifeme.pdfIn PDF document text
    • http://wazododasexixak.rf.gd/23097618860.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/sec_baseball_tournament_2018_format.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_off0000e807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE807 5940 bytes
SHA-256: 9996ee5e31d52b9ad6ee503ca85985d408a5fc6aa17b3a2547f2db2a2ca6e81f
font_01_sfnt_off0000fc43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC43 10584 bytes
SHA-256: edb74405d2bfc8085c56a0a0f39bd605d30958323fb61907c059ab396da16608

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