Malicious PDF — malware analysis report

Static analysis result for SHA-256 92579a9d417a3244…

MALICIOUS

PDF

42.0 KB Created: 2020-10-26 05:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6ab2251039a9d7d2253ad4e0879add70 SHA-1: eeef516dc20cf9ce69b3507cb4a328e00b5351df SHA-256: 92579a9d417a3244c4bebc637ec9b8f604ae5431d684ca3063b2f60134fb5559
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://ttraff.me/123?keyword=littmann+model+3200+manual In PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/a0bc8389f.pdfIn PDF document text
    • https://xiletepegokif.weebly.com/uploads/1/3/4/3/134319576/0f3ff4d9aa318f.pdfIn PDF document text
    • https://goxezojukaruvuk.weebly.com/uploads/1/3/4/0/134000107/kopojabawumediv-jilusumaxevofoz.pdfIn PDF document text
    • https://juxupadozimufa.weebly.com/uploads/1/3/4/3/134388451/rixekuja.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/ac1e7b346f228.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/070a588.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/bagiferotezin-sonebokiruril.pdfIn PDF document text
    • https://wawaxotev.weebly.com/uploads/1/3/4/3/134368025/xarajaleloniminike.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000065a4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000065a4.bin)
    • https://uploads.strikinglycdn.com/files/442b0820-c984-4316-ae11-cbfc37a919c2/mitivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718fc944-9c4c-459c-a3e0-907b243776ff/pigivejokinewif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbf63d1b-4c76-442e-b716-feb77db7f222/gedoxesupiwutizuvebamujix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7abeb8b7-b3c4-4114-99cd-1238c33be6a3/kaxerenigatusoner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47afecdb-b185-409a-b92a-438616bed24e/63096382360.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f501a4-4a0a-49c6-b7c4-b5b643779243/art_teachers_survival_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3c0bda3-d8a7-47f4-8aa5-9712e33c9c7b/93306898832.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1853968-556b-4f07-b841-26639931701e/54815795292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d58b2c59-5d31-420f-83d9-e5c45cbaad03/32751946317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ad0bcb-6da8-43bd-9cfe-2a4189bbd545/o_profeta_abertura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14cf7cc9-81b3-4ef5-911a-9c83e5100540/lidubojinuzugabajupawono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0598bbe2-4530-435e-b68e-8e9980b1e0ff/90706848990.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 extracted file (font_00_sfnt_off000065a4.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A4 5076 bytes
SHA-256: a5d374b4e023bdeac9a26b2c45cb0b80a58aa8faa0c347f59a5e6d80d4214fa6
font_01_sfnt_off000076cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CF 10476 bytes
SHA-256: 9f1677f101618c5daa9fbfef068b47dbde347cbb156f02c9f39b695100659a4e