Malicious PDF — malware analysis report

Static analysis result for SHA-256 3266e75afeb36821…

MALICIOUS

PDF

87.5 KB Created: 2021-01-01 06:58:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 9d99a132daa3da8796a2b8fd62195c53 SHA-1: 96e861cb116012bee0c964a6adc965d18157fbe9 SHA-256: 3266e75afeb368210db8e7c7535abef543bbbbedf332c545938a673ef29a74d9
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector and a link farm. One of the primary links, 'https://traffking.ru/123?utm_term=mario+party+2+n64+for+sale', is flagged as malicious. The document body, though heavily obfuscated, contains text related to a product sale, suggesting a lure. The presence of multiple external links points towards an attempt to redirect the user to potentially malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?utm_term=mario+party+2+n64+for+sale In PDF document text
    • https://cdn.sqhk.co/jawubibegeba/mggheje/super_99_discount_centre_vancouver_bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5faed21fbfe75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452621/normal_5fada67f59e38.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/AjdQgiM/hockey_goalie_pads_over_the_years.pdfIn PDF document text
    • https://sepanafawo.weebly.com/uploads/1/3/4/3/134316973/1efdc67f36f5e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_5fd80948bdee2.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/jimijunatadusok_vejufate_retubumekarorij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_5fd98fabdf6b2.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/tikofaketonub/54257977525.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/sap_journal_entry_upload_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/56109808421.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/gallery_website_template_bootstrap.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/funopelowixokusaduruli.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/newasevijuzemapezo.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/45588401065.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60B 5376 bytes
SHA-256: e818f7771e09eedfafb40d6f6f2658724c86769faff0b80968e8078ba1be4295
font_01_sfnt_off0001087d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087D 2140 bytes
SHA-256: fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2
font_02_sfnt_off00011257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11257 12380 bytes
SHA-256: e3a781c6b1911c97df089415892c87cc3e3197dd5cd16e7ef2804a86bc04b9ce
font_03_sfnt_off00013aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AFF 16132 bytes
SHA-256: 4b9970db0eaf58cff9e88b93e5ac5480fc8ebff6ef597b2eefebeaac098c8750

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