Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afe925286dac9c8…

MALICIOUS

PDF

58.5 KB Created: 2020-10-15 14:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1dd1f5e4d0ec049ae94990884493fe0e SHA-1: 7943d29461ddbc41e1dd2730a6682fea05445c89 SHA-256: 4afe925286dac9c8cb89c85d1103a5f65d85a1a1fd2cf28b6cc6bc19bbb339ab
184 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.
  • 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://cctraff.ru/123?keyword=descargar+mp3+de+youtube+para+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8740a47089b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f87e0fab98bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8702d1f3f14.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/a7b88.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/8693346.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/wonudejefezuvin_rojusowowasap_wixurokete.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/1766971.pdfIn PDF document text
    • https://site-1038880.mozfiles.com/files/1038880/12471871918.pdfIn PDF document text
    • https://site-1044029.mozfiles.com/files/1044029/57406834070.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/11820840915.pdfIn PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/20070164375.pdfIn PDF document text
    • https://site-1043080.mozfiles.com/files/1043080/zaxeto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f8748a517e08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f8755c632221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8731cd7b41d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87c73c1e598.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/1/0432/3151/0690/files/orange_tiger_lily_flower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5654/3944/files/afd_wahlprogramm_bundestagswahl_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/wagner_leitmotif_valhalla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/pufitagisadujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/45216971441.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000839c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839C 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off00009483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9483 5764 bytes
SHA-256: 761b0342034e39ebb215260956b3f27f87073531b33454e030bfadfee0472de0
font_02_sfnt_off0000a807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA807 2628 bytes
SHA-256: a30cb40fa02cf2a0ce4028f36abc23b35ff2f8a27dfb78ed15de8d799b85a339
font_03_sfnt_off0000b330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB330 12428 bytes
SHA-256: 3dd5d44d73ac8847196a7999ada0b1870c526ebe4acb9585196c48b6f07cd6e1