Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0dbadca9f575ce…

MALICIOUS

PDF

67.6 KB Created: 2021-02-27 21:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3b18602d734d9f19013292d36f01e5fb SHA-1: f8b7a24467b6520c60b988582837ba1b5ffa9517 SHA-256: da0dbadca9f575ceaec15804997fb0164024c1efbfa36d32b72ac6edaff4b521
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs that redirect to a link farm hosted on disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

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://xajibur.ru/aws?utm_term=can+i+buy+a+replacement+apple+tv+remote PDF link annotation
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/zumazunikixanu.pdfIn PDF document text
    • https://cdn.sqhk.co/vimavifuse/VgjgKXR/levi_s_x_star_wars_t_shirt.pdfIn PDF document text
    • http://lelekelosutov.getenjoyment.net/wegofotivirubabitixabawaz.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/geruwujewefebiju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_5fe908a525ff4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471512/normal_5fcc174f62cdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5fd6589bdf561.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384142/normal_5fcb8e6138d8a.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/c8Zhfhj/starbucks_drinks_without_coffee_or_tea.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/fuzinekoj.pdfIn PDF document text
    • https://kuxivudu.weebly.com/uploads/1/3/0/8/130813582/fafos-woxasaf-mufomibejir.pdfIn PDF document text
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/8240006.pdfIn PDF document text
    • https://bagubabijotete.weebly.com/uploads/1/3/4/3/134319258/geforenaw.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/lupopiporuzufisanitolufoleegq3.pdfIn PDF document text
    • https://banafazag.weebly.com/uploads/1/3/4/3/134325205/1423782.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/gPmieic/sexafulofugibanixed.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/bisiku/automatic_sprinkler_control_system.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/briggs_and_stratton_vanguard_23_hp_horizontal_engine.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/muvilofu.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/android_action_bar_add_left_button.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/championship_manager_5_free_full_game.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_off0000fede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDE 5108 bytes
SHA-256: 342c803e7a6d444840e4c76d4466620687c5f88d42faadd5780d2b31ae031d99

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