Malicious PDF — malware analysis report

Static analysis result for SHA-256 41e3d41de0330d1e…

MALICIOUS

PDF

73.7 KB Created: 2021-02-07 09:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9544b198b78f863765aea40941a7127b SHA-1: 3ebf49fb4c10e10d1d2cb670725f5c80779d584f SHA-256: 41e3d41de0330d1e6a4f2d50f7dbab1a999436e86278cbad48e7dc564c5d4e90
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/wb?keyword=kintex%207%20325t%20datasheet PDF link annotation
    • https://dogaralezuj.weebly.com/uploads/1/3/1/6/131637140/pisujomesizaxiz_womavuvirof_fomawofotu_wexefig.pdfIn PDF document text
    • https://febegivag.weebly.com/uploads/1/3/5/3/135394932/3562086.pdfIn PDF document text
    • https://cdn.sqhk.co/sivefuxonix/eji4if8/56295983882.pdfIn PDF document text
    • https://webuwexuzebonal.weebly.com/uploads/1/3/0/7/130775053/pimolavetogubisi.pdfIn PDF document text
    • https://cdn.sqhk.co/ripalufix/65ii4gh/free_fps_battleground_cover_strike_3d_commandos.pdfIn PDF document text
    • https://jezulusawuse.weebly.com/uploads/1/3/4/0/134000263/sogugogeminux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387235/normal_5ffbbc5cdc19e.pdfIn PDF document text
    • https://vujipobunovopo.weebly.com/uploads/1/3/5/3/135324227/1835971.pdfIn PDF document text
    • https://xizuxikeg.weebly.com/uploads/1/3/0/7/130740292/bozulurotezugu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406481/normal_5fc8db6c413a4.pdfIn PDF document text
    • https://cdn.sqhk.co/ligumorik/NBlrYge/blue_book_motorcycles_honda.pdfIn PDF document text
    • https://vewekazetuxif.weebly.com/uploads/1/3/1/3/131379326/fudolivazixuril-sojanatupeziruv-tafiritodet-sizirozubavupuf.pdfIn PDF document text
    • https://sezokifor.weebly.com/uploads/1/3/4/5/134596047/11eebaaf176e830.pdfIn PDF document text
    • https://tedawubav.weebly.com/uploads/1/3/4/3/134376018/4288a789fdefb.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/hidhbhb/wowisitoxafaduzedotadam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_601aff56cec78.pdfIn PDF document text
    • https://dotuxebi.weebly.com/uploads/1/3/1/4/131454754/bf55c7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wunozoviwo.epizy.com/givanumikewo.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_off0000dfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAE 5320 bytes
SHA-256: b9de89827eaa1a0978b3a0e975f924cc0d9fa9f896e454cc83d381e2958f1e03
font_01_sfnt_off0000f1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DC 11632 bytes
SHA-256: 0ddff266e38557f72525726be039cc86b1643f71bbb44970ac3121abef6dbf97

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