Malicious PDF — malware analysis report

Static analysis result for SHA-256 760a86e73625ce72…

MALICIOUS

PDF

77.9 KB Created: 2021-04-06 11:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2d10e4b6d2d8ed80616e33fc0b02d5ad SHA-1: 91237f0c14c39e6573e6d237c0f8e77947733175 SHA-256: 760a86e73625ce720e3b0166db272332a2f9ef34241bf1330b9a7cd6be02005b
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable domains and are part of a link farm, suggesting an attempt to obscure the final malicious destination. The presence of 'sims+4+patch+fix+november+2020' in one URL indicates a lure for potentially pirated software.

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://soxebez.ru/strik?utm_term=sims+4+patch+fix+november+2020 PDF link annotation
    • http://zopokujejisolan.getenjoyment.net/nubazomakufokixoxetujof.pdfIn PDF document text
    • http://zilitimo.getenjoyment.net/sownictwo_angielski_b2.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/temepulemijisilerexo.pdfIn PDF document text
    • https://taxupati.weebly.com/uploads/1/3/4/8/134891344/8855427.pdfIn PDF document text
    • https://cdn.sqhk.co/dozumapufa/ihggJha/seabeard_can_t_find_stonefish.pdfIn PDF document text
    • http://luxibenuguk.getenjoyment.net/giwenidijanutewerer.pdfIn PDF document text
    • https://jobemorisawelav.weebly.com/uploads/1/3/4/1/134108772/3b394.pdfIn PDF document text
    • https://cdn.sqhk.co/sawibevas/dC5geDD/download_super_starfish_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/gfL9geP/22230859784.pdfIn PDF document text
    • https://fegoparowewara.weebly.com/uploads/1/3/4/3/134321013/62661be952.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/antidiabetic_activity.pdfIn PDF document text
    • http://jewogipuwivi.medianewsonline.com/49873855544.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/iAagchd/age_of_empires_2_hd_military_strategy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tebuwawezizafes.onlinewebshop.net/what_essential_oil_kills_foot_fungus.pdfIn PDF document text
    • http://fikamax.epizy.com/wolazuxuwekenenuwud.pdfIn PDF document text
    • http://xeleleragakiji.epizy.com/applied_spectroscopy_a_compact_reference_for_practitioners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d4cae9-7423-45b3-a351-f40a76b6f974/hp_spectre_x360_motherboard_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f29fdca-01a1-40bd-8b3f-4420258dddad/jefapovejerujebonex.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/abstract_and_concrete_nouns_quiz.pdfIn PDF document text
    • http://nibemodida.myartsonline.com/you_are_worthy_of_it_all_chords.pdfIn PDF document text
    • http://katufimeg.rf.gd/88827331876.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_off0000ef53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF53 5956 bytes
SHA-256: a6e6aa277094a7f9c7fbd261520dc9cd1e5e9a6d61dda2e1122bee559cb6908b
font_01_sfnt_off0001037b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037B 10960 bytes
SHA-256: e2aa54f628ce2384ffbef1cb839c98d74b002115bb9064504a3c002977372cf3

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