Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a01cd08ce56822…

MALICIOUS

PDF

69.7 KB Created: 2021-02-16 04:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 13b6c71b127e3a6f868c565d363e1deb SHA-1: 571f28eb342c42847b6e340f40934f16d787cb8f SHA-256: a9a01cd08ce56822f498b41da727321e6afd17667559ee660b7d400ff2d40d8f
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://seumenha.ru/wb?keyword=why%20is%20it%20called%20tropic%20of%20cancer%20and%20capricorn PDF link annotation
    • https://cdn.sqhk.co/savaketiju/4j8PmXP/20767786101.pdfIn PDF document text
    • https://kujedoduzenawo.weebly.com/uploads/1/3/0/7/130776750/9948357.pdfIn PDF document text
    • https://timigotevawil.weebly.com/uploads/1/3/5/3/135329967/bd3f0980.pdfIn PDF document text
    • http://nopisodozig.66ghz.com/11713711032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386613/normal_5feb094776820.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450347/normal_5fe0c84d6feea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406787/normal_602716a1c0288.pdfIn PDF document text
    • https://jipukikibowema.weebly.com/uploads/1/3/4/6/134633032/tifofi.pdfIn PDF document text
    • https://jomitapekox.weebly.com/uploads/1/3/4/3/134319499/4564951.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474978/normal_6015c5eaa53f2.pdfIn PDF document text
    • https://voledepegos.weebly.com/uploads/1/3/1/4/131407008/navujimi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putojoner.rf.gd/42150262532.pdfIn PDF document text
    • http://zizekag.epizy.com/52406876226.pdfIn PDF document text
    • http://rajunuximu.epizy.com/33187160028.pdfIn PDF document text
    • http://jekowatu.epizy.com/95555455863.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_off0000d3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CA 5360 bytes
SHA-256: b2c94dfb13b7796fead785eae29b2caf66832c32c20db3cee406777e77c4a853
font_01_sfnt_off0000e612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE612 10420 bytes
SHA-256: 9404aec38c40c9362b9a61991687777c52f25deaf05b6b74d0a763428516e91f