Malicious PDF — malware analysis report

Static analysis result for SHA-256 175ce1e21cacb430…

MALICIOUS

PDF

68.1 KB Created: 2021-02-20 11:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cd82e440d717e3602eeda55e6623a814 SHA-1: 3e09691198c1c7685144ae57765ae45711241709 SHA-256: 175ce1e21cacb4308d6456cc0a2f54014a9c4ce7415dbbd234da65f929100f6c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://maypoin.ru/123?utm_term=why+my+gas+logs+won%2527t+light PDF link annotation
    • https://cdn.sqhk.co/vuwewiwudesi/qjcGE0R/core_graphics_in_swift.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/gdhbibo/30672427873.pdfIn PDF document text
    • https://topudamix.weebly.com/uploads/1/3/4/5/134581811/6676146.pdfIn PDF document text
    • https://fisupipegapug.weebly.com/uploads/1/3/4/5/134515512/2075448a93f1ea.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/7649285.pdfIn PDF document text
    • https://lilonukile.weebly.com/uploads/1/3/4/7/134767916/butemugokojogepovu.pdfIn PDF document text
    • https://xidoxuzi.weebly.com/uploads/1/3/4/7/134707988/bilofepexubomigiro.pdfIn PDF document text
    • https://ximepovefuvaxoj.weebly.com/uploads/1/3/1/8/131856443/tilepepinomup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413368/normal_601e1e1490af6.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwogoxozoxi/HjBjfhh/vapomifugelefolozokofo.pdfIn PDF document text
    • https://nogapixefakul.weebly.com/uploads/1/3/4/5/134590999/3adec800d32.pdfIn PDF document text
    • https://cdn.sqhk.co/gimexigerub/dKihiii/pixel_survival_3_mod_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/uSibhgN/wemekadexi.pdfIn PDF document text
    • https://cdn.sqhk.co/niserutom/heidXbA/kovowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_60152d382e1a1.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_off0000ce69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE69 5244 bytes
SHA-256: f6a9b2aaec2274c1dcf01a3cdeade36950b4060a4ca5b8fe7382cb475a416c30
font_01_sfnt_off0000e03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03F 10380 bytes
SHA-256: 1edbb81b586c6dfc28afcc5c9ef16b61f3fac2adf3200359b8c0ee9d736def13