Malicious PDF — malware analysis report

Static analysis result for SHA-256 59de8935a8361777…

MALICIOUS

PDF

44.6 KB Created: 2020-08-30 18:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ed6e3a1cd289a2c6d48a8f435d822a8 SHA-1: 369db1893c6797a67ab12e01025511373d80d6cc SHA-256: 59de8935a8361777b0b28d4030c66442d1a74be5bf11141bbfe87547a1ada835
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the URL and a plausible-sounding topic, suggesting a social engineering lure. The presence of numerous PDF links, many pointing to static.usrfiles.com, indicates a link farm strategy, likely to improve search engine ranking for the lure topic and drive traffic to the malicious redirector.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=good+topics+for+english+presentation In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/fa32a6_319a6ccaeec849959a765074899e0213.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7567f9eee92c403992c2b22ba7720452.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/599026_bf25d07e34884cc09638b16f5f78e48b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_dd6b989234fb4b62b9efc3dbff31a08e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cc572_6d2e29118f574c5a8291437ccebdc068.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_abcf35407fab42aab17ac4e20d9a7c69.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9e41f0_8c55e22bf21c43c3bc7bdcdc7899ff05.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9bd70585d6d14b55b562ffd30a412f7e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0d9a50_c74214223a264e8eb1313d6033ab48d8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d54300_e11860aa9f154fd7b93ba84a8711f0e0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/33a2e4_eaca26b703ad40ed8daaf879390ffdce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b65acf_637e616b1b9c46f9999759b49a53c0aa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9272e80b060e4b27adc9b0f291a28513.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c63dba_c5d2f5f4b5ad49378c05531d6a884dec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_81b87fe516dd48da9ca8c03f5954dd05.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 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_off000071b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B3 5448 bytes
SHA-256: 16cbe21d25fb99e15ec1a8db6f3d72466cb2d0c58fe6b4610a120acfb0077be7
font_01_sfnt_off0000843c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x843C 9792 bytes
SHA-256: 0593cda97ecf098c661ff4c5dae6b3d6d7d85e9863bbf3803e7b5bc76d1e77e1

Open this report in the interactive analyzer, or submit your own file for analysis.