Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9f863eea098c57…

MALICIOUS

PDF

85.0 KB Created: 2021-04-12 01:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b3a95e78d13df8aad05e0fba90ef06d9 SHA-1: 872adca391b8a246eeb298490acc973fc40a138c SHA-256: 6d9f863eea098c574c6dd6dd2e46bb4a7087665caa3f270fe3292443e9c11d66
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/strik?utm_term=very+short+stories+for+middle+school PDF link annotation
    • http://deine-gabe.com/rvunl_informatics_assistant_answer_key9wp27.pdfIn PDF document text
    • http://differencecheats.net/nobusivuzigujadx7h28.pdfIn PDF document text
    • http://fesunasisodenod.getenjoyment.net/pdf_to_dwg_converter_download_crack.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/hdOoibK/star_wars_galaxy_of_heroes_forum_player_lookup.pdfIn PDF document text
    • https://cdn.sqhk.co/mivadunoxo/gjih0GQ/ufc_fight_tonight_cost_dish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_601b85f21b7bd.pdfIn PDF document text
    • http://tramlaweq.online/graco_tranzitions_3_in_1_safety_ratingecawc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6065fa536ca82.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/NMijjhm/boxukilolafizorika.pdfIn PDF document text
    • http://xirapanagix.getenjoyment.net/63065843255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_604f4d885d80f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_6067c912cee8c.pdfIn PDF document text
    • http://hookup668.site/commercial_real_estate_lease_abstract_template3g6wx.pdfIn PDF document text
    • https://cdn.sqhk.co/juzexokogim/Ng2gehd/nick_cordero_covid_why.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/jfJNhcP/zombie_herobrine_minecraft_skin.pdfIn PDF document text
    • https://cdn.sqhk.co/pukefoxer/ihbZja2/xopesuzujipevefazamena.pdfIn PDF document text
    • http://3-bureaureport.info/92167428442racu7.pdfIn PDF document text
    • http://keniworu.mywebcommunity.org/behringer_x_touch_compact_manual.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://nibubatovavav.atwebpages.com/cashless_economy_research.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_off00010457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10457 4800 bytes
SHA-256: dceff6353fe6cb347268e998f3b8862cea0c9e9d10ba7fef11099e867e0e3282
font_01_sfnt_off000114b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B7 10640 bytes
SHA-256: ab45c559b71652fe5ae962de5c90404a3f8dafe065ff70c0807be6344649313d
font_02_sfnt_off000138dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DD 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.