Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb398abefb68998…

MALICIOUS

PDF

57.2 KB Created: 2020-11-08 12:09:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 11d5c84d28f98c6f3f5ce60e2d02a9ed SHA-1: fac321a73d9273280731edd0b1248ad8573887b4 SHA-256: dbb398abefb6899870a86f334bf8f1089679c9086758215f2ef31ef245aa60a4
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://traffset.ru/123?keyword=toomics.net+excuse+me+this+is+my+room+all PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384835/normal_5fa0d1be69056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f9948f42ff35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5f8d1201a71b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f879e5d4c642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403417/normal_5f9be7b6ee8d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_5f8f9f843b081.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_5f9214574d1f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_5fa2c5fa98773.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f91c1a79b626.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f9a4c02cfd83.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://s3.amazonaws.com/jiwisi/ocarina_of_time_music_list.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/11698527924.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/cpm_algebra_1_answers_chapter_8.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/61208609725.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe7e01f5-12b2-41c9-a629-395e0dd6be7a/23440809354.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_off00009300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9300 5072 bytes
SHA-256: 74abffce46f1f441d6d39e7129cfc3f301e797ea1a68ac44b8b1b801584e4647
font_01_sfnt_off0000a41b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA41B 10956 bytes
SHA-256: 7293e9da4e15ccd41c8cb9d2b3bac277e7cd6161e9628dba1bba3d459078b8d8
font_02_sfnt_off0000c968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC968 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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