Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f5fe6e5c4041e2a…

MALICIOUS

PDF

46.0 KB Created: 2020-11-09 04:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 46ccbccdc05370efd871861f0f06140c SHA-1: 2a255b7f387c98d146a79064e08040c6185888ac SHA-256: 0f5fe6e5c4041e2a4f0132bfbef17d75448d0f0bf1b211541da8b7d2e236a57b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=unblocked+games+77+plazma+burst+3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5f9a01c5ee6fc.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/5090826.pdfIn PDF document text
    • https://zokagagewawo.weebly.com/uploads/1/3/4/3/134346606/8986329.pdfIn PDF document text
    • https://kufazijofiw.weebly.com/uploads/1/3/0/7/130776126/jaxozezagagatape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5fa577b287ecd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5fa1492bc0ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403672/normal_5fa0c36638934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5f8cb1dedf83b.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/c7599d4e-22ef-463c-b1fe-eeb3bae5aa53/jowuxazetibewe.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/5_abiotic_factors_in_the_ocean_ecosystem.pdfIn PDF document text
    • https://dokawedog.files.wordpress.com/2020/11/gtd_audio_sk-16_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6C 5716 bytes
SHA-256: d21e3e94e19cd858e6c3b3f2f7d8de8a509223c6b9ef0b23115168e510da026b
font_01_sfnt_off00005fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD1 10204 bytes
SHA-256: bddf041363091aecde36bbd3468f30dd81477b17458f4737012fb4f162fea396
font_02_sfnt_off0000829f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829F 17420 bytes
SHA-256: 80bf5e86db81dc9f376b887566f5b252c284f6bc2c946ecda437365009242755
font_03_sfnt_off00009c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C51 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230