Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e9ab2749509108…

MALICIOUS

PDF

82.6 KB Created: 2021-05-16 13:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e300de9039bba403781d80a8c2088f0c SHA-1: 1bcaca4abbc6f3abf8fca2143a34be6b1992828a SHA-256: c9e9ab2749509108a04aebf36b0bc28655502decb0e3e2ae7994fa1e6dfa4293
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 0.9995

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://soxebez.ru/strik?utm_term=how+to+use+a+george+foreman+grill+for+hot+dogs PDF link annotation
    • http://pinudub.iblogger.org/3m_cable_jointing_kit_price_list_2020.pdfIn PDF document text
    • http://podarokinsta.online/10706322422ouzr8.pdfIn PDF document text
    • http://ru-dev.xyz/free_templates_admin_bootstrap_4pf261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_6066b9372da5a.pdfIn PDF document text
    • http://mmmuuuue.space/kedimafipepibozinibevomp8up.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464724/normal_5fe5372dacdb6.pdfIn PDF document text
    • http://pitushok.fun/wanatog46jaz.pdfIn PDF document text
    • http://vertitribe.store/84580697675oh1p1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501054/normal_602286550e8b9.pdfIn PDF document text
    • http://wadokijop.22web.org/coulomb_s_law_derivation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409998/normal_603df3942b7b7.pdfIn PDF document text
    • http://kekogatemofe.22web.org/40451798217.pdfIn PDF document text
    • http://claire-irk.ru/6059985830n60md.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepibugab.rf.gd/campbell_ap_biology_9th_edition_download.pdfIn PDF document text
    • http://rosuwofa.rf.gd/pisiform_bone_pain_and_swelling.pdfIn PDF document text
    • http://kadebenatoloxib.rf.gd/how_to_turn_off_cheats_gta_5_pc.pdfIn PDF document text
    • http://zalolod.epizy.com/fexodarakuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be9a0ec-4698-42d0-a4bd-1f64eb44f4ae/arabic_educational_games_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b10914d-96c1-49de-ab13-23aa27a4b33a/gigunilovu.pdfIn PDF document text
    • http://rirusivinudi.rf.gd/vubajokevuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce15734d-3e3a-4459-9d43-7ec172e643db/zumikodezip.pdfIn PDF document text
    • http://rawodofomer.epizy.com/how_to_get_free_food_pizza_hut.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC68 5376 bytes
SHA-256: 1b93218e29ad05e384943da052a7561af1fd01849b15fb7f7d0601608e966ae2
font_01_sfnt_off0000fe8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8D 11412 bytes
SHA-256: a185c01f1f9dae1e706733e79cd531eedb53c53e6904ac917c10148e5dfd3e17
font_02_sfnt_off0001257f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1257F 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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