Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1d3f8a182284e5…

MALICIOUS

PDF

47.1 KB Created: 2020-09-28 16:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0206b1334216f0896ae4f42b837ceb25 SHA-1: 0096d48630a3c60496425b7df8ca1de445ac9842 SHA-256: 5f1d3f8a182284e5a0cdb6e269ad44febe0d3cfcc43fe1cd4657e88b01258131
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of embedded URLs pointing to external PDF documents, many hosted on disposable domains. One URL, https://gettraff.ru/mozel?keyword=espa%25C3%25B1a+en+africa+subsahariana+pdf, is flagged as a malicious redirector. This indicates the document is likely part of a link farm or SEO manipulation scheme, potentially distributing malware or leading to phishing sites.

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://gettraff.ru/mozel?keyword=espa%25C3%25B1a+en+africa+subsahariana+pdf In PDF document text
    • http://temeba.everythingmotorcyclerider.com/uploads/1/3/1/4/131406893/7292723.pdfIn PDF document text
    • http://jufaze.piecesoftimesouth.com/uploads/1/3/1/1/131163992/woxedixol-gexokedabov.pdfIn PDF document text
    • http://files.intuitionlive.net/uploads/1/3/0/7/130739892/9677283.pdfIn PDF document text
    • http://files.hypnosisworkz-sp.com/uploads/1/3/2/6/132695352/6278970.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/munuruligokanizu.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/zodusujuxukizex.pdfIn PDF document text
    • http://files.lifeenergypowers.com/uploads/1/3/0/7/130775627/3491163.pdfIn PDF document text
    • http://lixipozo.rosintonumc.net/uploads/1/3/1/4/131453060/8e02d0.pdfIn PDF document text
    • http://files.brighterawards.com/uploads/1/3/1/6/131606819/nomupeguvevafawi.pdfIn PDF document text
    • http://tejigeb.ridefastcoaching.com/uploads/1/3/0/7/130740190/e1a1caee8d9794.pdfIn PDF document text
    • http://bovis.racefansforever.org/uploads/1/3/1/4/131408170/bawegowosu_sunudozoxuren_kujofudaxaxov.pdfIn PDF document text
    • https://site-1036764.mozfiles.com/files/1036764/zefewezomerapa.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/rawopedulosule.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
    • 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_off000069ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AC 5212 bytes
SHA-256: 0f2bb7155f9bb571c70c35540365e7d069938f0205e00a1d5dc6645451ee45f3
font_01_sfnt_off00007afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 11196 bytes
SHA-256: fec64500042e90dc7255ef29d67c2a0b346df369d6f5230bfa44d2f670c1d503
font_02_sfnt_off00009f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F87 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3