Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e3db175de9e737…

MALICIOUS

PDF

83.2 KB Created: 2021-05-09 15:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 840a7ca10ec0944f85755bdc74d51d76 SHA-1: 84849924922423ad69211006af7a311722456fc3 SHA-256: f1e3db175de9e737b39904556a738ddff319befec6d5f5b72ad92ec231534fea
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8031

Heuristics 4

  • 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
  • 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=does+vizio+e55-c1+have+bluetooth PDF link annotation
    • https://cdn.sqhk.co/gogadibavuta/zIY9Cjc/object_treasure_hunt_app.pdfIn PDF document text
    • http://good-production16.site/party_invitation_card_templates_freere3tc.pdfIn PDF document text
    • http://segwaywheelchair.ru/english_phonetics_and_phonology_free8wtio.pdfIn PDF document text
    • https://xumebarukez.weebly.com/uploads/1/3/4/6/134687090/c2817d58cbd81.pdfIn PDF document text
    • http://djami.ru/child_of_god_cormac_mccarthy8ivxp.pdfIn PDF document text
    • https://cdn.sqhk.co/berazanoga/gjgheWJ/divine_divinity_alchemy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/gabamulijawe/7LKiagf/snes_mini_ebay_australia.pdfIn PDF document text
    • https://kekofujazedelep.weebly.com/uploads/1/3/4/8/134879672/mawove-gapoxojubabefok-xafepuza-jesotub.pdfIn PDF document text
    • http://getne.xyz/17702348412fegxj.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewakuw/oLuhhnS/ufc_fight_pass_login.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/bose_awrcc1_review.pdfIn PDF document text
    • http://lexisunat.iblogger.org/nclex_pn_review_questions_quizlet.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/99518647190.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/tawovojo/48467280519.pdfIn PDF document text
    • http://xekabotiwuker.atwebpages.com/robuxemoxokor.pdfIn PDF document text
    • http://kudawarov.epizy.com/zalinisobi.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/kixovemeno.pdfIn PDF document text
    • http://zekumituvi.epizy.com/6864327826.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/51056382784.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/nozatadikur.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_off00012728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12728 5024 bytes
SHA-256: daf28a31e3dbe158b77fdbf6f8456e866f9576c6869bd56453cb56ea79c3835f

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