Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7fe04925c13c23…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 16:25:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b98b9c15f473a70959c8e9f6ba208536 SHA-1: 04ffc842870f93b5205cc8438ccdc5edf72300b8 SHA-256: 9f7fe04925c13c235e584dd14f82454182eb24a364c1613aed8aab4dce337561
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://baarspo.ru/wix?keyword=baofeng+bf-f8hp+user+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416934/normal_5fee47437d28a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387226/normal_5fd1cfb2135cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378157/normal_5fd054fa093cb.pdfIn PDF document text
    • http://tivirazetuxozux.22web.org/effingham_performance_center_events.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408871/normal_6019b029e5e00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476001/normal_5ff99484b6871.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490132/normal_5fe52e5a7cafa.pdfIn PDF document text
    • http://mowilobo.22web.org/80003189266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_60210755e92f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378608/normal_60044c9787e4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446264/normal_60239ccdb478f.pdfIn PDF document text
    • http://fb-ig-violation.com/vawelivaguex3s.pdfIn PDF document text
    • http://bilabugova.iblogger.org/battery_3_native_instruments_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417422/normal_601c6a1284dfb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dulizarunagisu.epizy.com/muwogulavakujas.pdfIn PDF document text
    • http://xabasib.rf.gd/95251561011.pdfIn PDF document text
    • http://luwegovufa.epizy.com/defekadakilaxo.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_off0000db1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1E 5732 bytes
SHA-256: 717cbb5936dfbd87203a42adba77d7615b6cf752350f9e9e0abdc16a76464d24
font_01_sfnt_off0000ee77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE77 10468 bytes
SHA-256: 950572619ece68b5c759d0a4f9e49cd4add18e3bde6af8f16aa59d66a1c83138