Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d4d06ad70e3477…

MALICIOUS

PDF

77.1 KB Created: 2021-03-30 14:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 72e8ff3adaa3e06918b4f70b31d8d048 SHA-1: 00eb424d6c4d6963cee4308549c32787bcaa9e79 SHA-256: 58d4d06ad70e34777a53fe16e80dd6cf6aa4c51a9b28f0921465ae93b5a349ce
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious content. The document contains numerous embedded URLs, with a primary focus on directing users to `https://lozipotod.ru/strik?utm_term=what+are+the+nursing+assessment+tools`, disguised as a search result. The PDF's structure and the presence of external URIs suggest it's designed to redirect users to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=what+are+the+nursing+assessment+tools PDF link annotation
    • http://sifimomikev.sportsontheweb.net/87071612568.pdfIn PDF document text
    • http://fawaxifiwuzodil.scienceontheweb.net/wewelo.pdfIn PDF document text
    • http://info-pages.ru/fluke_mda-_550_datasheet0ddhl.pdfIn PDF document text
    • https://cdn.sqhk.co/disemelukap/fbheijc/49832302430.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/2010_camaro_ss_l99_0-60.pdfIn PDF document text
    • http://buzevuzelape.mywebcommunity.org/96276463875.pdfIn PDF document text
    • http://jigatinapa.22web.org/best_business_powerpoint_templates_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/xupodafib/gfhijbY/jet_s_bot_builder_robot_games.pdfIn PDF document text
    • http://petersikdar.com/jewuzofomomosotad1rzpa.pdfIn PDF document text
    • http://rubyshup.space/how_to_use_poll_everywhere_in_google_meetvixic.pdfIn PDF document text
    • http://a1metromovers.com/auction_houses_appleton_wisconsinu47ix.pdfIn PDF document text
    • http://pochta-24.cc/airthings_wave_review46f18.pdfIn PDF document text
    • http://jonipifenukiz.mygamesonline.org/xowalilematapoka.pdfIn PDF document text
    • http://manovina.mypressonline.com/gemujojaloda.pdfIn PDF document text
    • https://cdn.sqhk.co/wikikifigas/idhgjaj/chess_3d_multiplayer_offline.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_f4046934cb564920b46792e0f4fef6d7.pdf?index=trueIn PDF document text
    • http://najovuwovi.rf.gd/rafegowewipixadoxijefanok.pdfIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_df42df8349be48cf9421f04cf9220a15.pdf?index=trueIn PDF document text
    • http://gowepuxajotezo.onlinewebshop.net/wobofosojididujavufup.pdfIn PDF document text
    • http://soneloratugop.epizy.com/non_chronological_report_ks1.pdfIn PDF document text
    • http://dozonox.epizy.com/tuxuzavakup.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2D 5112 bytes
SHA-256: 1bc1927e4e0941f391b292762dfcbc6c84e1ca93f70438763485704defaaa4fa
font_01_sfnt_off00010070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10070 11096 bytes
SHA-256: 2cbff169942d231b91d33addd13fc79972832bfcbf21099482d6698b95be2e6d

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