Malicious PDF — malware analysis report

Static analysis result for SHA-256 274aa029674a2028…

MALICIOUS

PDF

75.1 KB Created: 2021-02-20 02:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b8fd56d8e11784e27dad159f9aa11bb7 SHA-1: 47e7a170a846f05857520bdde209cec244f34e75 SHA-256: 274aa029674a20280e12d0ace499400e8c31473679309fa56638f353bde7e9d6
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, one of which is `https://jottigo.ru/strik?utm_term=lexus+ls+460+for+sale+cargurus`, suggesting a lure related to car sales. The heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` indicates the PDF is part of a link farm on disposable hosting, further supporting a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/strik?utm_term=lexus+ls+460+for+sale+cargurus PDF link annotation
    • https://dewokazivefin.weebly.com/uploads/1/3/1/4/131437233/feguretuvafato_kikudowe_fojizafuti.pdfIn PDF document text
    • https://xidamosu.weebly.com/uploads/1/3/4/7/134707329/gapisizazasitel_xabexojimo.pdfIn PDF document text
    • http://visiwetivopewe.iblogger.org/usa_hockey_rink_template.pdfIn PDF document text
    • http://nadahul.ru/majarogaluxulagopeziyzeo5.pdfIn PDF document text
    • http://urro-hu.com/mekivukuxapipadibajo3wsia.pdfIn PDF document text
    • http://drovazvenigorod.ru/what_are_the_types_of_organizational_structures_briefly_explain_each9noy7.pdfIn PDF document text
    • https://kafomepavazepa.weebly.com/uploads/1/3/1/4/131409794/dilopugese.pdfIn PDF document text
    • http://finansi-7.online/o_l_c_ka_full_form3bp3w.pdfIn PDF document text
    • https://minazunanuvisim.weebly.com/uploads/1/3/4/6/134666394/viresofasizez.pdfIn PDF document text
    • http://presalon.xyz/free_printable_disney_itinerary_templateb1sdz.pdfIn PDF document text
    • http://xebupalifu.22web.org/41020074119.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://renowuvix.epizy.com/windows_server_2012_essentials_download_iso_64_bit.pdfIn PDF document text
    • http://nimunofat.epizy.com/afrikaner_culture_information.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/answers_in_appendix_e_chemistry.pdfIn PDF document text
    • http://talakukatutevib.epizy.com/33830036707.pdfIn PDF document text
    • http://tapewiwesumufug.epizy.com/648292944.pdfIn PDF document text
    • http://dulaxidej.epizy.com/73504030309.pdfIn PDF document text
    • http://lafatakijuton.epizy.com/80952002587.pdfIn PDF document text
    • http://mumizoxagoguros.rf.gd/driver_bematech_mp-_4200_th.pdfIn PDF document text
    • http://vubixegigag.rf.gd/24515435529.pdfIn PDF document text
    • http://govatojajij.epizy.com/33188172614.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_off0000e65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65E 5440 bytes
SHA-256: 950ef1b4f908cd5ff88d3e912094f48dd0746d9ba1b9048cf30253fbe63b8bcc
font_01_sfnt_off0000f905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF905 10964 bytes
SHA-256: 0dcae6654ae3e310519e706ac7fffed491d7bdb99fbcf02ab0a081ecf162c33b

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