Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d4083ace891c13…

MALICIOUS

PDF

48.4 KB Created: 2020-11-09 13:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 84bff33efcc8384bfca998e5d19c8576 SHA-1: e1388ba340a5d24cbf4fa6189d0759052a026cd4 SHA-256: 29d4083ace891c1368428d2a0a9e0b51164d970c04b8fe03b2299c92d34469cc
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=short+story+charles+by+shirley+jackson+pdf In PDF document text
    • https://vabebixeteguju.weebly.com/uploads/1/3/4/2/134234611/5246642.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/zafeb-tikugi-tuvopafi.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/f5d445.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://lotijilakoda.weebly.com/uploads/1/3/4/4/134468432/jefug_jasopu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367308/normal_5f875401c5f31.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/de7267a0-fc3a-4ff6-8472-fa1df2bae2d7/lavozobigorola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34a8ee4c-98ef-493e-b668-e47f2a93430b/avatar_legend_of_korra_episodes_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fe3b640-26ce-42a9-8ea4-df42e7d7863f/29533334760.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/94632983405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfcb53b9-9f8a-4023-930b-92b30e003220/zarilebixavufuju.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/8270284718.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/vogazagepebijoragedigaf.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/nesakemofase.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/mount_saint_john_academy.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/9408171777.pdfIn PDF document text
    • https://s3.amazonaws.com/mupakijivuruzim/francisco_alegre_partitura_acordeon.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_off00006d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D83 5516 bytes
SHA-256: c80379bd314f255a8515a9335ccea094fcd81e1ea9d99becd9f6d7bcb3792cbb
font_01_sfnt_off00008034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 10960 bytes
SHA-256: 10e9da53fe920dc327c33ec1330a4b3c04ccd9baafb77b9eec8d83b2d8df8295
font_02_sfnt_off0000a4b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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