Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf98a8c954ba032…

MALICIOUS

PDF

68.5 KB Created: 2021-01-09 07:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cfef78f52fc28100d9eeb0670a582d8e SHA-1: ddd4ffa5fb232b6860e6dc6b8ad7b3d66357687d SHA-256: fdf98a8c954ba03223c69c412ab2179e3b2c07a546760dd9474b9dddbdd632bc
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a '17 inch laptop backpack north face', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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=17+inch+laptop+backpack+north+face In PDF document text
    • https://cdn-cms.f-static.net/uploads/4447433/normal_5fa825162aad5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368488/normal_5ff3208b1c1db.pdfIn PDF document text
    • https://jafedemigizol.weebly.com/uploads/1/3/4/5/134588438/teradena_wukifukot_kidumudawukose.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5faa7c2d6a6f8.pdfIn PDF document text
    • https://dizasufe.weebly.com/uploads/1/3/4/6/134680143/vexud.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/hgihdfl/c_h_a_s_e_ka_meaning.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f897210ce342.pdfIn PDF document text
    • https://cdn.sqhk.co/mojobugoge/EtUuji8/dezifukifuxijuxiliridozaw.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/vazego.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/ledaben-xerudepibu-wanozuvi-rogit.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/xovajukoxin/9760021043.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/juzuwesiwegofebatel.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/twitter_videos_android_online.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_off0000d0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F2 5168 bytes
SHA-256: de341dbee8014ce2ee4b459fcd3a64fd58093b47e72af365bb045f08fdf8431d
font_01_sfnt_off0000e28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28C 10240 bytes
SHA-256: 541191537c1c967850c497575807851092e6329174927a8b6f5f8bac8f2376b5

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