Malicious PDF — malware analysis report

Static analysis result for SHA-256 550962771c831daa…

MALICIOUS

PDF

42.5 KB Created: 2020-10-04 01:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 0d3bb59f1a322ec893abe78c2a5a30e4 SHA-1: 35d3dc014bad1a37ff02db8fca4989b6e25522f8 SHA-256: 550962771c831daa0276e0f6116d3cc0db79627d9e6bc523b0683752eade9a33
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically identified as a redirector to malicious infrastructure. The document body mimics a user manual download lure, including a "Click here to download" call-to-action, which is a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a malicious payload delivery.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=native+instruments+maschine+user+manual In PDF document text
    • https://site-1039409.mozfiles.com/files/1039409/fawabijepow.pdfIn PDF document text
    • https://site-1037246.mozfiles.com/files/1037246/renarabox.pdfIn PDF document text
    • https://site-1040878.mozfiles.com/files/1040878/96296628285.pdfIn PDF document text
    • https://site-1040559.mozfiles.com/files/1040559/wafin.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/79992159238.pdfIn PDF document text
    • https://site-1040034.mozfiles.com/files/1040034/46060922086.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/poxeludafemi.pdfIn PDF document text
    • https://site-1039132.mozfiles.com/files/1039132/xedopo.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/wijigusojiduwo.pdfIn PDF document text
    • https://site-1040437.mozfiles.com/files/1040437/99571595847.pdfIn PDF document text
    • https://site-1037172.mozfiles.com/files/1037172/masuvebujexovitonedufesis.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005caa.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005caa.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008e6b.bin)
    • https://uploads.strikinglycdn.com/files/6577404d-9102-4a2e-ba65-dccce9bcabb5/zofurazuxadenusaluw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242377e4-71ff-4cd2-b9b5-319c0bf7cfcd/feriginamifepuruzor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be43fb1-a5ed-4bc9-bb99-98b3e34048d7/73934315497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c06d270-582c-4f5a-ae79-592b58830419/pogamotiki.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_off00005caa.bin)

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAA 4840 bytes
SHA-256: 515a28a2ef66d91138ceb96ac2d6d534d04128fc5fadd509eedbbd8162ef0979
font_01_sfnt_off00006cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEA 9788 bytes
SHA-256: 24b01698b3f8a0b03079c433d966c093be7a5973c67312c52f6c29a15aeb357b
font_02_sfnt_off00008e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6B 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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