Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e52aeb094f60e2…

MALICIOUS

PDF

67.1 KB Created: 2020-11-24 00:53:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 093f6542c04af2f8fa72199f81b69e8f SHA-1: 2bbc7e8ee37da27a51c992ef11158259dcfdef64 SHA-256: c9e52aeb094f60e2ebbde8a326d097c03434c4b5dbfec369e9e20a46aca47170
156 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. 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 0.9998

Heuristics 5

  • 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 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://trafffe.ru/strik?utm_term=total+war+warhammer+2+ritual PDF link annotation
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/wavutevekisutowev.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/voxexinelosiremejas.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/jinabom/10536410690.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/kirchhoff_s_equation_thermodynamics_derivation.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/10739061035.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/obesidad_y_sedentarismo_en_mexico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff3d8ab-4102-4cc9-8b1e-4a48ded15874/63862419833.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/nursing_mnemonics_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/poxizebute.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/monthly_vehicle_inspection_checklist_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/fivegelibitomumimonididiz.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/mortal_kombat_x_latest_mod_apk_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/782ef17c-030b-4708-8d4d-66a84c7c285a/basic_electronics_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/target_market_analysis.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_off0000ca12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA12 4920 bytes
SHA-256: 4be8da30bd3bca78e8aac70480e2957a121a31ae602564f55a99246bd763acd2
font_01_sfnt_off0000dab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB2 10848 bytes
SHA-256: 6c0fa15fbe3d8e663757cd1de145d9123f2cdb1161ec4a0b56258f2c8621e837

Open this report in the interactive analyzer, or submit your own file for analysis.