Malicious PDF — malware analysis report

Static analysis result for SHA-256 63534f4c7e7221a0…

MALICIOUS

PDF

41.4 KB Created: 2020-10-28 06:46:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 93394d67a8b0cc554e891e11476c7722 SHA-1: 9788e92dbe98560faa7c6691a057a5e7d8a13363 SHA-256: 63534f4c7e7221a042f1b6c64172a71057b1ca614914d870bdb006973992d193
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link disguised as a "2000 dodge caravan repair manual pdf" which redirects to a known malicious URL. This indicates a phishing or malware distribution attempt, leveraging a common SEO spam tactic. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a redirector link.

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://gettraff.ru/123?keyword=2000+dodge+caravan+repair+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_5f8edd26a39e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387922/normal_5f90643fa03dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5f8f159c96bb5.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/47016c94-e43b-4549-986c-276c66de1b7c/93460935607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d920cc6-e84b-4e5b-8b29-f4deec57f969/34595110453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ce0307-019f-42d9-a016-87697a9457d2/zejevotuzajezekun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/366a80e1-feb8-4787-aee0-c517d376b771/96322790370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67f085aa-ab72-494d-b0f9-36fd2fc38f18/55903525712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f441545b-64be-4e4c-b84c-7863ccc9ea37/hebbuli_songs_free_download_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17705e72-97ca-4f6f-ac80-2ca87dfe5d64/81641141878.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/pakex.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/charles_t._tart_altered_states_of_consciousness.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/english_story_books_with_tamil_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/temazesabusas.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/39291187249.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_off00006303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6303 5536 bytes
SHA-256: 975888e9fc27711f524423846750b5829b09802309fd73f4bf514cf421733a22
font_01_sfnt_off000075b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B7 10096 bytes
SHA-256: af9e51bbe95b5c7df1b23ead72b8304f6f4c20c7aa4f70f5a7d97291d2e0bf5f