Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db147866d3e13be…

MALICIOUS

PDF

69.9 KB Created: 2021-03-08 05:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4ff89625441c4ed5f97021565a1ed50d SHA-1: 2c139ad3e9529bd1eb5ffc1acfcefcd23317a352 SHA-256: 7db147866d3e13bebfd2c3eefd88b70cc7b3ff5d6383630174821ceeaa09a37f
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 0.9992

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://pelibifir.ru/123?utm_term=2015+lexus+rx+350+trunk+space PDF link annotation
    • http://myluckywin.site/720029420349wjrg.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/samsung_smart_tv_55_inch_qled.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fdac09b95650.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/41815698196.pdfIn PDF document text
    • http://saroforati.medianewsonline.com/behringer_xenyx_x2222_service_manual.pdfIn PDF document text
    • http://italia-doc.fun/john_grisham_new_book_amazon0gnyn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5fe94d4fc60f7.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/xekuk.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/acoustic_blues_guitar_licks4syc6.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/12857965458.pdfIn PDF document text
    • http://tesar-krd.ru/logitech_m325_wireless_optical_mouse_-_black_greyob1u1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_6023cb487cf7d.pdfIn PDF document text
    • http://miwewumexurigan.sportsontheweb.net/kijanejazimobodule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402520/normal_5fdecc68e9b19.pdfIn PDF document text
    • http://repair-telefonov.ru/area_unit_conversion_chartohoo7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b733ca7c-e79c-4390-9d9b-691142f4e21d/portrait_posing_guide.pdfIn PDF document text
    • http://zaxuzut.atwebpages.com/dowavitomizakotufimumixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c93981d3-0bca-424c-a051-e3be1de6bff9/sword_art_online_vr_gameplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cecd1a08-68cb-4a03-bdee-d245d88fd246/13173976536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/556a1608-af20-479b-905f-15592ced406f/after_we_collided_movie_release_date_america.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36551833-3670-4c5b-8598-3a3b96784212/how_long_to_charge_i_pilot_remote_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63836168-b55f-4e07-8891-a2388178e968/msi_760gm-p34fx_drivers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c64069-6ea1-47a0-b9f5-d93827ee0534/26355497030.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_off0000d42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42D 5580 bytes
SHA-256: 988cbcf3e29edadd09bced5a0a0458d4a0308b86483214ad9b21d416190ead6f
font_01_sfnt_off0000e73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73D 10140 bytes
SHA-256: 36eb5da22172362dc47a334d5fd8ef22a577f6e1ea47537aa79b1f5988a7e901

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