Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe06e7b15261cd78…

MALICIOUS

PDF

81.0 KB Created: 2021-04-24 03:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 25c31ddb848e3761d10a6d07dc7eb923 SHA-1: 11fa9771377fb3f2e1dafff6097484d32b302896 SHA-256: fe06e7b15261cd785b2f35aca30c92db72959a6cdd6be1ad308bd6962b63fbab
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 0.9961

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://zajinet.ru/strik?utm_term=seventh+day+adventist+church+california PDF link annotation
    • https://cdn.sqhk.co/mezomabesoki/hWjcPie/4696560833.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/72m991U/dell_kb216_usb_keyboard_driver.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/gupavagaxugirojunipapelel.pdfIn PDF document text
    • http://romeoplanet.club/73224659965jegqe.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/gwOggql/cake_designs_for_mens_50th_birthday.pdfIn PDF document text
    • http://sovetnik53.ru/gaxenixilevivuwesojilo6oeb5.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/YgfMhdv/dezaxives.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/HeMgcWK/82239405019.pdfIn PDF document text
    • http://zonojebiridizo.mywebcommunity.org/fingerprint_based_attendance_system_using_8051_microcontroller.pdfIn PDF document text
    • http://pazefezos.mywebcommunity.org/approaches_to_management_development.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/fFMYgiS/cyberfoot_soccer_manager_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/KhhUhiY/19320769992.pdfIn PDF document text
    • https://cdn.sqhk.co/teforoke/LiaghzK/11986986428.pdfIn PDF document text
    • http://crawlmqyu.space/skyrim_best_mods_xbox_one_2021vs1i2.pdfIn PDF document text
    • http://kimugifogetami.medianewsonline.com/3478536170.pdfIn PDF document text
    • https://cdn.sqhk.co/jelivapizivo/hdig5gh/toca_kitchen_sushi_restaurant_hack_apk.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/tukekokak.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/84d88ee9-6426-4451-8e72-aebfca42e8bf/best_latin_phrases_for_tattoos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b7de9d4-3d39-45d6-88b9-7361d8fc090b/12920946802.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96ed126e-3d8c-4b1b-82cf-7e9e3631ec03/85441645041.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf1e2032-5cea-4834-a875-b8f4e2f49878/present_simple_exercises_for_young_learners.pdfIn PDF document text
    • http://ralirajuz.atwebpages.com/kawovakos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/621834a8-5b3b-454d-8e7f-1fc12fe78f97/vutidu.pdfIn PDF document text
    • http://misanedajog.myartsonline.com/fly_tying_desk_organization.pdfIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/zakufupawex.pdfIn PDF document text
    • http://sajoveguduv.onlinewebshop.net/48101006174.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_off0000fe79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE79 5376 bytes
SHA-256: 3114e00f7ee6fcf455c400ab07f84330115a37d91173d0aa4e446993b262747d
font_01_sfnt_off000110cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CB 10856 bytes
SHA-256: c3bc36572ce45f3a5a59e3b79a263bf766bbce8b8b1c4778b6bacea816842820

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