Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf83da5284a0cab7…

MALICIOUS

PDF

51.9 KB Created: 2020-09-18 07:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00c4c3cd1ad4c00709628b6bd8306bb4 SHA-1: b86c476615bdfe13cf2eb7892b3e5245a3c260aa SHA-256: cf83da5284a0cab7fc0402de8566365ac6abd35efccda591092ae758e9285960
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link that is identified as a malicious redirector, leading to a URL containing 'lightroom torrent free download'. This, combined with the heuristic identifying a link farm and a visual download button lure, strongly suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the same lure URL. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://ttraff.me/wix?keyword=lightroom+torrent+free+download In PDF document text
    • http://keraru.moagabrielsson.com/uploads/1/3/0/7/130738902/a8655.pdfIn PDF document text
    • http://files.warriorkings.org/uploads/1/3/2/7/132740182/jexakupotewumeje.pdfIn PDF document text
    • http://kumukuxe.rrmaids.com/uploads/1/3/1/3/131382700/8366830.pdfIn PDF document text
    • http://files.marissagagliano.com/uploads/1/3/1/6/131606373/rorafetebipuwovo.pdfIn PDF document text
    • http://kipux.collegedreamsconsulting.com/uploads/1/3/1/4/131406535/9eacbaffa643065.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b8ff5552-d99e-4b82-b465-c40334ae67b5.filesusr.com/ugd/41f880_9d484c5cccdf40c7be91036cc7e43b4e.pdf?index=trueIn PDF document text
    • https://beaa4782-6203-4e3f-89ad-f4d3fbde7e6a.filesusr.com/ugd/98d33d_a6c1d0e2ac2149939565a621ca05c653.pdf?index=trueIn PDF document text
    • https://a5cc74db-67c3-43a4-b632-9a5fb34b9abf.filesusr.com/ugd/144d27_284fa7dae83b4eeebd3e1203f050f26c.pdf?index=trueIn PDF document text
    • https://c9abc0cd-d179-4c2b-9bb5-4bdc16e9dcdc.filesusr.com/ugd/8bf3fc_e1fd56a2d43e4c49acc8c4942b995184.pdf?index=trueIn PDF document text
    • https://376faa40-2666-4877-874d-dfc3bfe7b510.filesusr.com/ugd/1da05d_686127cf3cdd4f1584f7700bb7e7f49a.pdf?index=trueIn PDF document text
    • https://45d66f35-58f9-4302-9615-748f705e8f07.filesusr.com/ugd/3fd21f_e30b8d222f7942ada37a6c012fe6140e.pdf?index=trueIn PDF document text
    • https://49c6af61-b264-46e1-8c7c-3c4b545efd35.filesusr.com/ugd/882da0_af4ce30829c0469993321056670535e6.pdf?index=trueIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB6 5176 bytes
SHA-256: 203d59793493fc9ff708a1ccf5a5b3e223033e42954de150eb2fe1ec78d63015
font_01_sfnt_off00009c3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3E 10756 bytes
SHA-256: ef924c82e698654ba53ec3da1cc9ddc9c732f401061a312922dfaa29b0609e6e

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