Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0e598e5717a2bc…

MALICIOUS

PDF

45.4 KB Created: 2020-11-06 09:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: b24aaf676ba8372bbf0f904193839441 SHA-1: 4be859ad4143a608e78c7819d54b0cc829fe4f52 SHA-256: 4b0e598e5717a2bc205136466db99aa8c60e55fbf93d524914d4e8476aa3a8ec
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://traffine.ru/aws?keyword=dragon+ball+z+capitulo+235 In PDF document text
    • https://lisajakuxateril.weebly.com/uploads/1/3/4/3/134349263/femazegiwabu.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/ec5a3e4cb324a.pdfIn PDF document text
    • https://jutivodip.weebly.com/uploads/1/3/4/4/134489611/056d703baab4ae.pdfIn PDF document text
    • https://mozesewopizudal.weebly.com/uploads/1/3/4/3/134363743/dorirozuwigasonedi.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/893275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/donarepemi/what_are_the_advantages_of_steel_structures.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/71695654952.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/buddha_quotes_on_faith.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/28309246540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9335fda6-e017-462c-8379-e7e7090d7e72/52477316286.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8b2798f-f6fa-4b17-97bf-3a0ed27755b2/dilobuzul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df2ace40-3170-4f95-a75f-804486c5cb47/menoditepad.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/majusizasurale.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_off00005d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D76 5568 bytes
SHA-256: 3fe4d39f15a2a4897b45870bf14d81abac051339eb88b0c84f27f8e31a9b6eb9
font_01_sfnt_off0000707d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707D 5532 bytes
SHA-256: 3f221d6ae4d3450abeba2f6294fed8e412b13a1f35382d83ea279988ca881afa
font_02_sfnt_off00008370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8370 10804 bytes
SHA-256: b3a65c650e9311544925c7ecd10fa788888774e772e40ec9bebda65a78969eb1

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