Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c3b336b7ffff78…

MALICIOUS

PDF

74.9 KB Created: 2021-02-27 10:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6758412d6598460e46fc714d9b3da28f SHA-1: 01f16e176d686f71de9d1e8f833555fdb70b76f5 SHA-256: e3c3b336b7ffff78faa85967a9e26812199249cd12ac608324364951e2bc046f
196 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.
  • 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://golowaki.ru/award?keyword=how+to+fix+laser+on+ryobi+miter+saw PDF link annotation
    • https://jijelejo.weebly.com/uploads/1/3/4/5/134590633/0ea909bf590c260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456998/normal_6028a798f3940.pdfIn PDF document text
    • https://xowavexinoj.weebly.com/uploads/1/3/1/4/131408618/0adf63320b3bba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380382/normal_5ff12e73dccd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459636/normal_5fde6e809ca16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413109/normal_5fce0be996567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456671/normal_5ff59e3e75d49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416510/normal_5ff29070998cd.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/2ba049b1344d04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_600f0e824f509.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fe415cbd8b6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://limoxukuk.atwebpages.com/6789672606.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/winojerufar.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/nokia_e71_call_recorder_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/86268176822.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/android_9_easter_egg_nokia.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/58272248986.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/11503627044.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_off0000ea41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA41 5276 bytes
SHA-256: c4ea48c0393560432568368a4976b9a09c5d6977e63fdf8b3b094dcf3273fb7e
font_01_sfnt_off0000fc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC39 10244 bytes
SHA-256: 15fd11e287a5ce517c67d0eba013951957e6239871fca209cd8d73cfbc01ae26

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