Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e8d639dc1393cf…

MALICIOUS

PDF

55.9 KB Created: 2020-10-02 07:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aee7dadd03fdd6bb1b526b725c9116f5 SHA-1: 73f14094eb65d235fe482b5546e87c0e4eec395b SHA-256: 47e8d639dc1393cf9cd4765c736c85836dd13e34adb4d1d18ec3be0919240b08
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/strik?keyword=metoprolol+succinate+davis+drug+guide+pdf In PDF document text
    • http://files.jagnq.com/uploads/1/3/0/9/130968988/gorilizilapavi_nazegofufebepuz.pdfIn PDF document text
    • http://kuzipur.kevaneymartin.com/uploads/1/3/1/4/131454696/bab107112eb.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/modakedoxulexemazidipi.pdfIn PDF document text
    • https://site-1037202.mozfiles.com/files/1037202/14357808551.pdfIn PDF document text
    • https://site-1039814.mozfiles.com/files/1039814/7415682824.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/6639040636.pdfIn PDF document text
    • https://site-1036838.mozfiles.com/files/1036838/91475228120.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://cdn.shopify.com/s/files/1/0432/3750/7240/files/dd_5e_battlemaster_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0789/6482/files/equations_with_distributive_property_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/poop_clicker_unblocked_games_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/6621/2519/files/hoa_huong_duong_tap_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dbb6e93-6ced-4f24-8df8-6fd2be912b47/29131415910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/048d787a-c49a-4160-9d80-ff1b9f1684ff/35570860107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6a3e325-f6d2-4fa3-8d96-a34ffe7c784f/57473006909.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd42999e-c1a7-4da5-b5a9-4f6954dc36ad/gukanukimigoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f63abca6-8e34-4e90-8948-f7e8b4302d42/sesoduxizuvepitologulonif.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_off000089ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BA 5268 bytes
SHA-256: 00ddf6f52fd3d31e195f5f84a58904976d71194fc59b37ce2b327d933e82d896
font_01_sfnt_off00009bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC8 12640 bytes
SHA-256: 34001aaa006544cf4b5c939d97882d1cd2a4b34f7b7abeda67c9208f1d6c4f14
font_02_sfnt_off0000c474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC474 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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