Malicious PDF — malware analysis report

Static analysis result for SHA-256 65799bd17a5765cf…

MALICIOUS

PDF

48.1 KB Created: 2020-09-17 02:38:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0464252186bd31bdaf34e362595d3801 SHA-1: 7c3cdf5f1601701b18f1e1b5c8bd877d0367159e SHA-256: 65799bd17a5765cfe9c1608ec4c96b8b1214b1dd44fe42dd9f33bdff79f70221
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting, and one critical link identified as a malicious redirector. This structure strongly suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware. The ML classifier also flagged this PDF with high confidence.

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.club/wix?keyword=coda+2020+conference+on+data+analysis In PDF document text
    • http://xojalimu.coachmicheleevents.com/uploads/1/3/1/1/131164312/8515122.pdfIn PDF document text
    • http://jukifuben.normansignsanddesigns.com/uploads/1/3/0/7/130739873/dc58a0.pdfIn PDF document text
    • http://tigeluko.mistystevensbluegrass.net/uploads/1/3/1/3/131383483/2620353.pdfIn PDF document text
    • http://files.woodstovemulledwine.com/uploads/1/3/1/6/131606758/2006387.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c4f02167-d1f1-416a-8391-49f2d7c2d9d9.filesusr.com/ugd/28146e_553f0ddceb7d487cade2fd1669ffc69b.pdf?index=trueIn PDF document text
    • https://f7695350-ddd2-43ff-8353-f6d86c7d6727.filesusr.com/ugd/f17c08_34ac353791a14cb99a7a763bab62e374.pdf?index=trueIn PDF document text
    • https://e3c9d32f-7849-430f-96e9-49b810cfdf15.filesusr.com/ugd/003b86_793dab6867d34de5b49ee6488415ce92.pdf?index=trueIn PDF document text
    • https://5073ecb5-de6b-4da6-93c3-bef75053cb73.filesusr.com/ugd/c1de29_a428be5fbb5b4f4d8bb66195fe971114.pdf?index=trueIn PDF document text
    • https://bda0ccd0-af68-4cfb-9a62-6cd1e85dba57.filesusr.com/ugd/9757e7_7ceeb3e990d7448a825cdf7a34c4b2fe.pdf?index=trueIn PDF document text
    • https://81f7ae72-e87e-4e6b-a0bc-b78927246be5.filesusr.com/ugd/0aab01_83d757d358cd4db985869bdce13b7bc1.pdf?index=trueIn PDF document text
    • https://c565bedc-c9de-429c-a778-e593acfb1241.filesusr.com/ugd/9e41f0_e8d4ad26eae548c58c47a91def48e861.pdf?index=trueIn PDF document text
    • https://2d4a09e2-6de5-4ebe-976d-b20c53fd3c9d.filesusr.com/ugd/2f8cea_325e0d4a12934dcd8b32e2e354fd285b.pdf?index=trueIn PDF document text
    • https://82a10bb9-9381-4430-9448-8d89329cc811.filesusr.com/ugd/b8c837_a79e8818eb6145cdb191c55709b7a691.pdf?index=trueIn PDF document text
    • https://77df711d-4242-420d-b9c8-7ceb4711e060.filesusr.com/ugd/c8df25_7d91719de5e94bbc90c729b940b240ed.pdf?index=trueIn PDF document text
    • https://60f167a5-e247-4062-bbbc-2017e0448328.filesusr.com/ugd/31bf02_d00c31a9456343b98e846e7f13518e9c.pdf?index=trueIn PDF document text
    • https://e65eda69-8cca-481f-8943-d73378768e92.filesusr.com/ugd/6f58fb_b11aca2161e44e2f85bb762883db138a.pdf?index=trueIn PDF document text
    • https://dc2947a0-c59f-4f4f-9968-ffc9038b5a53.filesusr.com/ugd/fd30ac_b1310fbd7c724d89ab2dc00decd57c34.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007dc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC9 5296 bytes
SHA-256: b59b71068420b71d329ec58a0090801acf399379bf9d3b4ea6b5f8f00882e6d0
font_01_sfnt_off00008fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDF 10396 bytes
SHA-256: 2c8266ec6ef22c7a8a4867a7c6892830913663c04553de7b0d3ea6b1a2107013