Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09a1e16826e4f85…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 19:43:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 95c64e74d69385906dbf337c1c07a365 SHA-1: 7c5cbfdb3e00361dcfb43587d540b83b4fb6bd53 SHA-256: c09a1e16826e4f85fa6d6b6467aa36b12b9812fea20b75aefb4f54e6396697ac
126 Risk Score

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 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://seumenha.ru/award?keyword=sony+ps+vita+2+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423166/normal_60357cdf24f01.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/jeicOhd/79010617237.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/jQGwjjn/33052869386.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/hhPrywN/34_85_rudy_wot_blitz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409796/normal_5fd11d7710814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_5fd6624e3032d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530323/normal_6039d9727a09b.pdfIn PDF document text
    • https://cdn.sqhk.co/vetejevibas/egyVYJd/pajomizimezixademepax.pdfIn PDF document text
    • http://sapazukuwujoji.22web.org/mowavifaxazimedowuzami.pdfIn PDF document text
    • http://pubggaming.online/82054544415wm379.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/MjaHcpB/smashy_brick_gold.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372960/normal_60104de8589b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5fc9d2a4bf054.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5fe2639ba2243.pdfIn PDF document text
    • http://yesnutural.space/cdi_pocket_guide_20160ay7q.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/donarepemi/water_cycle_information.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/adobe_flash_player_android.pdfIn PDF document text
    • http://fizojigijuzad.epizy.com/92776315010.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EB 5292 bytes
SHA-256: 4457cd960f0c0342c7c8e89a82a6a0251cf2a8e1a8da5b423b8055536d76eeb4
font_01_sfnt_off0000eb04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB04 1724 bytes
SHA-256: 39c65360afc14ab0fbb4975562c82b924f7d41038cdad1aa9319c0220f7cbc75
font_02_sfnt_off0000f39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39F 10320 bytes
SHA-256: 0caf948d8686803cd5a8fd02be527fa6a9c4d4cb5ae5d41b7c7b05a83dfbc8aa