Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3753fcaa7c6346f…

MALICIOUS

PDF

87.4 KB Created: 2021-02-25 14:01:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 22a91674ffd9051035de8b47cfa3274e SHA-1: 2a5302a293cd51ff7a2299d951dd1d2538f6fd21 SHA-256: d3753fcaa7c6346fc03ba1b2c271a9a085872d200a834fbe68dd830aa2a1c085
124 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, many of which point to disposable hosting and are associated with link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9511

Heuristics 4

  • 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
  • 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://seumenha.ru/strik?utm_term=evenflo+car+seat+with+base PDF link annotation
    • http://gatorama.site/hokkaido_travel_guide_mapsz95s.pdfIn PDF document text
    • http://sarelalitodidi.66ghz.com/palmistry_money_line.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/izyhjhg/smartmusic_login_password.pdfIn PDF document text
    • http://daravto18.ru/hanako_good_endingpjoso.pdfIn PDF document text
    • http://devlp.club/the_last_survivors_movie_downloadpdobp.pdfIn PDF document text
    • http://fotulemeliluk.iblogger.org/fivokezatilepugewopef.pdfIn PDF document text
    • http://wixiziz.iblogger.org/long_term_debt_effect_on_balance_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/9ghUIif/84063599820.pdfIn PDF document text
    • http://avbox.org/color_detector_pen4gpwv.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/frWihGG/best_word_games_with_friends.pdfIn PDF document text
    • http://vepapin.iblogger.org/vcds_18._9_full.pdfIn PDF document text
    • http://extraterrestrials.space/1221647472729a09.pdfIn PDF document text
    • http://fabulouss.space/vumolagararutibeqilk7.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/VpvSii7/vejesevamunenivoji.pdfIn PDF document text
    • http://vulefuxudonad.22web.org/jipowexepigebux.pdfIn PDF document text
    • http://outputqwvk.space/what_are_some_quantitative_research_methodsfcstu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vipaviveza.epizy.com/72500318323.pdfIn PDF document text
    • http://tubupokus.rf.gd/gigajonut.pdfIn PDF document text
    • http://vejobewibibir.epizy.com/57548543712.pdfIn PDF document text
    • http://zovuzop.epizy.com/musapube.pdfIn PDF document text
    • http://nopuxawox.epizy.com/54661792222.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14080 5220 bytes
SHA-256: 4eb8cdfcca25b169e2315c8fe510c047eb819b6abb2b1cd78b56a13c4cdceb2c

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