Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9f9e5464a24e8a…

MALICIOUS

PDF

98.4 KB Created: 2021-03-09 23:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f79b12cf5d42ce77d061bffdd7edb8e5 SHA-1: 2a95524630f861cbceff59c7382acf1a00a1c298 SHA-256: 2d9f9e5464a24e8a752ca071df83232c19b0523ef3a5db89d6d54313529321e7
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/wix?keyword=hidden+ninja+village+yakuza+0 PDF link annotation
    • http://meetporte.xyz/38174694796kopko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417221/normal_5fcd9aa3edf76.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/71176363846.pdfIn PDF document text
    • http://idealica-ufficiale.site/evenflo_car_seat_newborn_insert_when_to_remove72bsw.pdfIn PDF document text
    • http://instasurprise.online/19865876313j1jqy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_602d55d06d66e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448337/normal_5fc620f441d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fd2ca9e9e873.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421776/normal_5ffe6f677b377.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404299/normal_601d54c42f101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449205/normal_5ff4e05a9fb88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473645/normal_604634aa02229.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411717/normal_5fcbed28a1a9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472776/normal_5feb6392f3816.pdfIn PDF document text
    • http://theharaka.online/best_ninja_blender_food_processor_comborusez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_ded673ed09cb4665bd8c6d23df7b0d96.pdf?index=trueIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_b4bcdaebf9cd4d71aea77f69f522b6bc.pdf?index=trueIn PDF document text
    • https://8d40832c-2e2b-4284-8151-bb35a16d80ac.filesusr.com/ugd/05d014_8488764517e54f6dad9bb88c8bc62730.pdf?index=trueIn PDF document text
    • https://959e49da-b405-4961-97d4-5c1bb2e9a628.filesusr.com/ugd/ab0441_9f8f87099ebd488fbf1b543824e84a0b.pdf?index=trueIn PDF document text
    • http://rexefobixavater.myartsonline.com/carry_on_my_wayward_son_cover_-_supernatural_the_musical_200th_episode.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000136e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136E8 4864 bytes
SHA-256: 7901d8155612672d670a0d5a298d7bdc4ac6fecbc93372e68f2702be8abb47e3
font_01_sfnt_off00014784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14784 11492 bytes
SHA-256: f8e7ee998955a6cdded6731518fc74d9fff0d31a727a8244c33dff209ac14bbd
font_02_sfnt_off00016e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E63 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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