Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ca1f235461db4a…

MALICIOUS

PDF

70.0 KB Created: 2020-11-10 11:57:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 60dc22efd21fbc06e75a8cefd87afc08 SHA-1: d80bba01a4fc4a5a4b36f2fde5c85a3d30e5fd2a SHA-256: 36ca1f235461db4aa5d74eeb70dd67593588095c4bdcad7717b223f2676e330e
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/123?keyword=the+gourmet+collection+seasoning In PDF document text
    • https://vetaguluxidi.weebly.com/uploads/1/3/4/6/134656260/mimuvexe.pdfIn PDF document text
    • https://nuzilemuf.weebly.com/uploads/1/3/4/4/134479477/wasubazam_xapipigez_bovifodafelekos.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/gapezed.pdfIn PDF document text
    • https://jarowuvuvam.weebly.com/uploads/1/3/4/6/134614172/7304073.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a2a6410-4a3c-4dcb-bd1d-79b171cc2418/uncg_canvas_student_login.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/reasons_for_carrying_out_research.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80613167-c52b-4301-8981-01588d48995b/32481465444.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/rotixogitabepemipujuwona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c38d5d-2685-43b7-929d-b2eca1650ff6/bopaxasadu.pdfIn PDF document text
    • https://s3.amazonaws.com/tifemuma/naxigobuweparudataditer.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/when_peace_like_a_river_hymn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acea35f2-4c91-4d8a-9792-e007bf527077/dedibidafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23258b5-573f-4ba5-8784-25dea80eefb2/xamoleke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4e115a-790a-47f4-831f-ba8c5ec17329/kunuporame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dccd518d-687b-46af-a23d-e3a2e92754f6/fulton_high_school_ny.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF57 5164 bytes
SHA-256: 2f7493784ce771f32cd7420908ae193d315af46cdf4ba7e806f3ec976344b67b
font_01_sfnt_off0000d0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BE 10312 bytes
SHA-256: 4f710aa766ae91714909e72491c36a53eb98b4d7363c95e03420da563ae642aa
font_02_sfnt_off0000f401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF401 16744 bytes
SHA-256: 2d37a472e72d909f26bb6b03be039a20de1a54b26b63786ee35684561d0ec024

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