Malicious PDF — malware analysis report

Static analysis result for SHA-256 77823c515337db74…

MALICIOUS

PDF

48.4 KB Created: 2020-11-02 17:01:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9d3b0fd880c004a21745846fd57fb1a3 SHA-1: 1660bb048c331e887feb1114c7688ac2f81f1792 SHA-256: 77823c515337db744d77e79c495ce28ef19dc72093e7221abeaaf123a83c374f
124 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.
  • 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://ttraff.me/123?keyword=zelda+majora+s+mask+mods In PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/2992d.pdfIn PDF document text
    • https://lopuzidijunusi.weebly.com/uploads/1/3/4/3/134378181/42a126e407f4d.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/panuponi.pdfIn PDF document text
    • https://kirasupi.weebly.com/uploads/1/3/4/4/134442552/musisikaloj.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/zegolanizu-bilefatesab-koxolez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f87eeb4136ce.pdfIn PDF document text
    • https://pusazaninad.weebly.com/uploads/1/3/4/3/134358808/rudegoji.pdfIn PDF document text
    • https://beperiguvo.weebly.com/uploads/1/3/4/3/134320750/fovesaxunubev-dajizil-vifajemogoduluz-tiluzevemu.pdfIn PDF document text
    • https://wusoxebuwewete.weebly.com/uploads/1/3/4/4/134432123/jevusabu_lezuxoxazu_pokete.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403119/normal_5f95dbef66383.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374859/normal_5f8c25ed2a225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6021/9035/files/73853756009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86840a92-3d06-47b2-99af-ef2dc3d40eed/dodge_caliber_srt4_for_sale_colorado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/161927f4-2a0c-4a48-a11f-30eea1ae3d33/20101163300.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68EA 5068 bytes
SHA-256: 1145585bc50a28b65bec74f9026515ac4e6ce2cbdf7c63f1effbdc6afb82893b
font_01_sfnt_off00007a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 10632 bytes
SHA-256: 76725c637a6606c0af84d0da07928b049b25a2bec22a60b08ec8597b928be950
font_02_sfnt_off00009e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E79 16332 bytes
SHA-256: 2a247a753e8a01f70d7fcfa74e2d7baad7259a755652018209d99d19020bd12c