Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a35f5fadd05927d…

MALICIOUS

PDF

39.3 KB Created: 2020-09-01 19:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ff9b30d1a94beedb2cd55d44ac1b6eb SHA-1: a39538e958dff4019136007017647fd412036142 SHA-256: 6a35f5fadd05927d4341dc658d72e6a24e09576fe644cabf171ed7ce6fcc1f04
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a user guide, which redirects to a malicious URL. This pattern is indicative of a phishing or scam attempt, likely using the link to lead the user to a site that hosts further malicious content or attempts to exploit them. The ML classifier strongly supports the malicious nature of this PDF.

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.com/wix?keyword=scala+rider+packtalk+user+guide In PDF document text
    • https://latest.cardosystems.com/update-my-unit/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/b8c837_9bd5b760d96c4fa3b9c4c285c8990655.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c1108c_d8bc00ad685443b8bbda1228ba89bf41.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0f1814_3c607db4a14d48469f9a4baaacb8bd39.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0a0016_40dae7df9623467180f14295dacdb21e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/902d29_2787146c24534df0a2421e0d096f8020.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d5415a_8a97727cdb974fcea96e01b4c9b1599c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/30e015_d63c573d6ff840808f5e5f18a511f2d6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6c56ff02bb8747a39c6d409075c3bdb5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f1a8d8fb428a40da929200404155cdd1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/21a131_4a53a3c0b3be4ac187f716f0731d4905.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/50de67_df2e26a5cd424489843b981ba28cbaf3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/lifefekakoruziban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/24033304442.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 2

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_off00005c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 5408 bytes
SHA-256: a5194b8c54b28a2333a0d526286401191a1c343d5b87533ebf7fca97c4743494
font_01_sfnt_off00006f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0A 9900 bytes
SHA-256: bd18cfbda3110af3e50f0ca3b44618155805c908de362f02ae99663cb724db61

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