Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb26ebd41520d622…

MALICIOUS

PDF

77.4 KB Created: 2021-02-21 08:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8a7e71250614a6893be46283d9def0b1 SHA-1: d87ffac8ec4cdea1ebaf847fbc28639545c3969f SHA-256: cb26ebd41520d622c288c8f5664b557f5adbfd77f065a32f4e950b362e9fa1b8
126 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/strik?utm_term=safety+first+car+seat+grow+and+go+forward+facing PDF link annotation
    • http://lidagejelotodu.22web.org/2421653693.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414489/normal_600e6d925b665.pdfIn PDF document text
    • http://com-signto6.xyz/besadabodinisokivanayhvh4.pdfIn PDF document text
    • http://itawomen.fun/tegotomerig1y81.pdfIn PDF document text
    • http://7lessons.space/nolegenemewepks9k.pdfIn PDF document text
    • https://cdn.sqhk.co/diwamukef/2Zegchc/cruise_deals_galveston_2020.pdfIn PDF document text
    • http://natgood.space/68262490689cst81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5fc702ec10919.pdfIn PDF document text
    • http://gogotmif.space/2744656120lqytq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401518/normal_6018684e9f655.pdfIn PDF document text
    • http://trycabinets.xyz/xowaredawitc4emy.pdfIn PDF document text
    • https://cdn.sqhk.co/zokuwagopole/oyhfLie/call_of_duty_warzone_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/gavoduse/cciejeE/32588905497.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/hgghchc/eye_candy_movie_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/Jghij65/resort_hotel_bay_story_cheats.pdfIn PDF document text
    • http://lnstagramverifiedbadgeshelpcenters.net/the_gas_laws_boyles_law_worksheet_answersamewr.pdfIn PDF document text
    • http://agentsecure.space/37477944983a8tdx.pdfIn PDF document text
    • https://cdn.sqhk.co/lofakekaf/SjahjOL/war_of_worlds_cast_2020.pdfIn PDF document text
    • http://maddot.space/guitar_solo_music_sheet_free6bhz5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wutowaxodod.epizy.com/beautiful_nubia_all_songs_free.pdfIn PDF document text
    • http://kenakazukigixow.rf.gd/acrylic_perspex_sheets_near_me.pdfIn PDF document text
    • http://wuxekijonudi.epizy.com/format_of_sales_executive_cv.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E5 5240 bytes
SHA-256: 3451a4a77c75b0fe9a7d8640c09221892429812c869f1091f4f4dcaf3d0d55da
font_01_sfnt_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 10508 bytes
SHA-256: 08b97a675e1a855160aef8b1747bd1ee6ac6beeff6cf70c6f1c88b03f91e1f96
font_02_sfnt_off000119d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D2 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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