Malicious PDF — malware analysis report

Static analysis result for SHA-256 406c675e43674e20…

MALICIOUS

PDF

79.7 KB Created: 2021-03-14 21:58:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e0fe1fa74b9a428b9354c737f17608e4 SHA-1: 69b6f151c7b6c5e9b736d6a2d8158b3797108e74 SHA-256: 406c675e43674e205f616b5af1d13088d9b81e4cb7e6e11cb3341b4b6b0a51a2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery attempt. It contains numerous embedded URLs, with several pointing to disposable domains and potentially malicious content, such as 'http://leopards.space/stellaris_enigmatic_fortress_rewardswew62.pdf'. The document body, though partially corrupted, suggests a lure related to a dictionary, which is likely a pretext to direct users to these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=dictionnaire+de+l+acad%25C3%25A9mie+fran%25C3%25A7aise+9e+%25C3%25A9dition+pdf PDF link annotation
    • http://leopards.space/stellaris_enigmatic_fortress_rewardswew62.pdfIn PDF document text
    • http://shtangye.xyz/pedasajene32d7j.pdfIn PDF document text
    • http://monoga.space/91701636822gurc1.pdfIn PDF document text
    • http://invitesistem.ru/how_to_pair_turtle_beach_stealth_600_gen_2_to_xbox_one8gr3m.pdfIn PDF document text
    • https://kuvugelovusilu.weebly.com/uploads/1/3/4/4/134437140/1612482.pdfIn PDF document text
    • http://fresh-ita.fun/tewopijinafubedupoxopul2sy.pdfIn PDF document text
    • http://xarusogu.22web.org/mavosulibufof.pdfIn PDF document text
    • https://vetafewilede.weebly.com/uploads/1/3/1/4/131408572/levakanedufop-mikigewasisav-xavevajupeb-zulep.pdfIn PDF document text
    • http://sexedate69.site/6199187311092su5.pdfIn PDF document text
    • http://interbank.link/xovaginaminipzion.pdfIn PDF document text
    • http://copyright-notice-ig.com/mini_gs_barrel_thread4o4ws.pdfIn PDF document text
    • http://shtampshop.ru/emitra_mis_reportbof2m.pdfIn PDF document text
    • https://rixulajo.weebly.com/uploads/1/3/4/5/134585814/xewepozabuv_rovovirinukuga.pdfIn PDF document text
    • https://jasixuruvixu.weebly.com/uploads/1/3/4/2/134234618/vusezivusaxupitut.pdfIn PDF document text
    • http://maska-respirator.shop/how_to_write_conclusion_in_internship_report42mug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/waduzirader/sample_employment_contract_philippines.pdfIn PDF document text
    • http://jopuzasoxu.rf.gd/google_sheets_input_tool_alteryx.pdfIn PDF document text
    • http://fetijuvutod.epizy.com/ripufajoragari.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/ziwitabenopilidixifovili.pdfIn PDF document text
    • http://gotojin.rf.gd/us_catholic_catechism_for_adults.pdfIn PDF document text
    • http://tikolikenugim.epizy.com/chakram_cinema_ing_telugu.pdfIn PDF document text
    • http://mevililuxe.epizy.com/guide_installation_freebox_revolution_fibre.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_off0000f4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C6 5780 bytes
SHA-256: 3c23731a5257c9567f39a8dffdbf422869b0c6ced6c38edf043e8f1fc68608ba
font_01_sfnt_off000107d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D5 12312 bytes
SHA-256: 5ddca1cd461da74a0aa06c9e1dd4ff10da462505434fed337fb9fb6e4d95235f

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