Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8308050ee7f510f…

MALICIOUS

PDF

70.7 KB Created: 2021-03-04 11:11:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0832f1bf64c2cab5b06cdd4601c2bbe9 SHA-1: d069978a0e4b4529658d740826ec5313d4471043 SHA-256: d8308050ee7f510fe17786f80467d6fee700b676f14c83075b3c5a6922bc3950
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=miter+saw+laser+guide+attachment PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490138/normal_5fea28ecb7652.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481155/normal_6020821c10488.pdfIn PDF document text
    • http://ueuniti.xyz/fraction_division_word_problems_6th_grade9tvfl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408987/normal_60037a716b2bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_6024c33b842a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368756/normal_5feb985dab37a.pdfIn PDF document text
    • http://epipog.com/how_to_use_solver_on_ti_84_plus_c_silver_editionw3nwt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485454/normal_603fcc5930a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462374/normal_6038d76670063.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_601baea515b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472788/normal_600d84856bf8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5fd6ed74328c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392474/normal_60253eb668863.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_600de71311aa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382614/normal_6019a2e17e837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389084/normal_603db9dc4bd7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426550/normal_6035aca322cc8.pdfIn PDF document text
    • http://alisaborodaenko.design/silicone_wristband_mockup_free8t6kb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_6031235a732be.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_off0000da21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA21 5452 bytes
SHA-256: 0bd558cb0eb14d0f2bf5045c7232148346a5664b6bbdd60e4c95028717b7d325
font_01_sfnt_off0000ec9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 9756 bytes
SHA-256: 7898f18595d767d00b265ce2d7c77a463944fadaafa00471b2a548bd39e5f5b5

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