Malicious PDF — malware analysis report

Static analysis result for SHA-256 c470b629bf18bc0d…

MALICIOUS

PDF

42.4 KB Created: 2020-11-08 06:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 02f28ad55566529d4a285325bb00f5eb SHA-1: e5dbfcdfe44cd478710ff00e3af3bffe79ecf163 SHA-256: c470b629bf18bc0d9fd0a5114110b3063aef1805a753b3acc098e8cc6f62e689
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/123?keyword=the+cat+in+the+hat+book+free+download+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5f9be0e06cb06.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/2714978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f9b3386e7621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5fa0df5ea0831.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b31435ce-32ae-4ed6-8908-763dc24b9c7b/35898044239.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/helen_keller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ab19e65-29ac-4924-8b51-a85c2765a214/zomosigirula.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/34994509498.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/visejaxanujopisaveradobe.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/96824135491.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/kirby_right_back_at_ya_episode_24.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff68a7cd-9748-46d5-a6d7-f19cb828f64b/46540351714.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/star_stacking_software_for_pc.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A15 5096 bytes
SHA-256: bd5513be4024cda9a62c472f99af67a6a1fa60dccbc2c8c9f77b503f7794f537
font_01_sfnt_off00006b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5D 10280 bytes
SHA-256: ef08192a7e95dcafdc9ce994ca457fc6c49c6513e2d026aed442fed80f649fd8
font_02_sfnt_off00008e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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