Malicious PDF — malware analysis report

Static analysis result for SHA-256 989918efbe4e4cae…

MALICIOUS

PDF

39.6 KB Created: 2020-11-09 05:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: e76bf226f15f85a2a297cc824e828ec8 SHA-1: 5e201baa0e5ca73096c0b7449c6e8dc23a5dfe33 SHA-256: 989918efbe4e4caeb476f27860a96f818ab4103924293340c2cddb0d340c2e49
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://trafffe.ru/123?keyword=wrestle+jump+unblocked PDF link annotation
    • https://wubixuduliku.weebly.com/uploads/1/3/4/4/134466255/9316781.pdfIn PDF document text
    • https://gawubodukajine.weebly.com/uploads/1/3/0/9/130969599/modixodo-zepilu-kakibaponifuna-xatukigekuj.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/3569dfce-6232-4752-86a5-c06f7c37208d/crow_talons_dark_souls_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81167e82-2e7d-4deb-a21e-7c863b4a90bc/30201554889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45af5b02-761a-4784-88d0-2302bbe500f1/denivaxusukidekajodojepa.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/welinudepefugira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91883814-a429-4e9f-b796-a8fcdf865aed/15615235514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e510fd0-6c8b-4134-b800-5694127aa5fd/63038118679.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/pioneer_avic_z1.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/limosapudejona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc02f5f5-a851-4782-be89-c7a59dcfcbb0/usc_trojans_football_fight_song.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/oxygen_not_included_starting_guide.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_off00004cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CDC 5136 bytes
SHA-256: edc9508b6e0083bdef534df7ba943b42e8522c0a8098e9244e4c2dd4b4819f05
font_01_sfnt_off00005e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 11760 bytes
SHA-256: fa343d081eca3d465b406c2d64bac87a5b67f4ead6f8a77990291a57a314e2b1
font_02_sfnt_off00008408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8408 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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