Malicious PDF — malware analysis report

Static analysis result for SHA-256 d486f13b7b074f12…

MALICIOUS

PDF

72.0 KB Created: 2021-02-14 03:16:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 16dc6e65a1a78136d9dc5f2ed5e87b72 SHA-1: 0ec522e77a61246de2188d19c2fdd9a21c2eae37 SHA-256: d486f13b7b074f1214ab0bec2d0ffca23a2d9be095a802110ee69939f39f1fd3
126 Risk Score

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
  • 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.
  • 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://bologen.ru/wix?keyword=a+lesson+before+dying+chapter+11-20+study+questions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420589/normal_5fd7f7d82189c.pdfIn PDF document text
    • https://cdn.sqhk.co/zinazejoras/hijgiPP/playstation_4_slim.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/jg4CgAD/4649768851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450139/normal_6020128652dfb.pdfIn PDF document text
    • http://shop-kid-toys.online/81224656480scun3.pdfIn PDF document text
    • http://onlineeshop24.xyz/tie_string_around_cat_s_waist3pqkt.pdfIn PDF document text
    • https://cdn.sqhk.co/wisivelu/zQidl3e/hell_park_tycoon_simulator_uncopylocked.pdfIn PDF document text
    • http://axacheat4.xyz/mini_bike_7_days_to_dieo9l5k.pdfIn PDF document text
    • http://genoray.pro/25598226787wm3z5.pdfIn PDF document text
    • http://voiprormul.xyz/984452388926kbp9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_600f2415a3270.pdfIn PDF document text
    • https://cdn.sqhk.co/bemovunilupo/ltRiage/77008095004.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461523/normal_5fdd60d053d28.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/gjahjKj/47006722166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420756/normal_6018b129851dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD967 6132 bytes
SHA-256: 39fd51a5d4f0bf67f01cb2367a178c89e5655f163802a0f06dd23a9581b2de4f
font_01_sfnt_off0000ee4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4E 10704 bytes
SHA-256: 0f762bb2592efcacf752e416a129fd1a0805a8d1dde5ce9526c67a664b59abfc