Malicious PDF — malware analysis report

Static analysis result for SHA-256 697b29157d9fd529…

MALICIOUS

PDF

83.1 KB Created: 2021-04-02 14:16:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3b51999ed2d2623fbbe4341cdf4c72e0 SHA-1: 71cea930cf4cceb16aaad4d704d2d33b8bda562e SHA-256: 697b29157d9fd5298df5e6c77fad386ddfe652c1d0d0b2e530c72b53044f9a32
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 0.9997

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://leonvi.ru/123?utm_term=madden+19+ultimate+team+chemistry+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494149/normal_6059a02c20e56.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxiropuwomo/RrgdU4S/tujulofexagu.pdfIn PDF document text
    • https://cdn.sqhk.co/xafogatok/jgePwgj/28694969212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412388/normal_603c3b11bc174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402517/normal_601852a266aaa.pdfIn PDF document text
    • http://fageweduso.iblogger.org/aplicaciones_androides_para_descargar.pdfIn PDF document text
    • https://cdn.sqhk.co/sezabaxo/igfiijb/47580841923.pdfIn PDF document text
    • https://cdn.sqhk.co/buvovemif/Rx2BiiP/cushman_and_wakefield_uk_office_market_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369771/normal_604a569d5f626.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/dhjiby9/jimojofovigosikonis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5fceab39d077a.pdfIn PDF document text
    • http://fowagovujag.22web.org/63768038166.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/i21Shin/phase_10_card_game_rules_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/bokupajokim/Iij2Ohi/video_poker_free_no_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5fcbd21d61278.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489409/normal_600eaa8b9cd47.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/jaFihAQ/56273238462.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/5ed4b7a5-8856-4182-b4a1-a68404193710/new_england_beekeeping_supplies_inc_tyngsboro_ma_01879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5604c5e4-0524-4a6b-a129-8a9a428003dd/30737928722.pdfIn PDF document text
    • http://sepimenixinu.epizy.com/hp_p3015_fuser_kit.pdfIn PDF document text
    • http://mafonoxerinomif.epizy.com/charlotte_s_web_1973_full_movie.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_off00010698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10698 5668 bytes
SHA-256: 30dcf86005b17ec12e2f4c1ae1a773fdcb6e05f1750c439e178fac35f6d95327
font_01_sfnt_off000119d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D0 10892 bytes
SHA-256: 75a90e8bade69be43ae1c443cddb3a43801e435c70641e7d038aae9389b7ce41

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