Malicious PDF — malware analysis report

Static analysis result for SHA-256 59eb93a968323bca…

MALICIOUS

PDF

79.4 KB Created: 2020-11-18 02:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 74733816557394899b05924b2259f789 SHA-1: b2905ef6dbee59718717644bac3a58a8f109cf14 SHA-256: 59eb93a968323bca6678f9cb6e0a4d4250e4a616cbfb5e9a2d9e69f7a2090201
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a large number of external links, suggesting a link farm or redirection mechanism to obscure the final malicious destination. The primary malicious URL identified is https://traffset.ru/strik?utm_term=julia+serano+whipping+girl+pdf, which likely serves as a lure or initial landing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/strik?utm_term=julia+serano+whipping+girl+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371240/normal_5f889cb8e82bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369784/normal_5f8bea1f9f123.pdfIn PDF document text
    • https://jutivodip.weebly.com/uploads/1/3/4/4/134489611/dizaxikofaz-fuwivuno-fupemi.pdfIn PDF document text
    • https://sozipufejelaj.weebly.com/uploads/1/3/4/3/134352325/29fffa4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388827/normal_5f97886c3d87c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_5f9c6a66c6f89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/93dc48af-787d-42be-b833-58a532083560/6053505446.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/emulator_3ds_android_terbaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff7c6711-3ac0-40e5-968d-40b492e69337/bamemozibaxudubulegagizu.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/59154004846.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9d0b0a4-84bd-49bd-b381-75247cccef56/free_learning_websites_for_5th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ab8680-fa21-4c73-88c7-1ae1a3fe7821/zalupizukenorawuduwiwixew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2952f1a1-1295-4895-abdb-17ca1bb975c6/32787946408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a741da1-e10d-4444-9e33-06c0726c97cd/xizexavuwabexiv.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/90918472535.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_off0000fa6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6D 5384 bytes
SHA-256: 4a3c5198f3dd6b03f0346380f9b2305a83bf15cb47d90a7e31de48d13081e6ea
font_01_sfnt_off00010ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCC 10520 bytes
SHA-256: 44fa893deea440bbb4764f67168c4262399e6bc400d20e76276bf1dd2efc9bf1

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