Malicious PDF — malware analysis report

Static analysis result for SHA-256 791b813074dbd562…

MALICIOUS

PDF

43.4 KB Created: 2020-08-30 19:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3bf82c15a617b17aed367a98375107b SHA-1: f6adfd827d2a1404aeece7d2e77c56771877f22d SHA-256: 791b813074dbd5629050107ffc9de8a03c9160fde81e6df28ecaed11fd8cff4c
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains a lure related to 'Roblox stuck on configuring' and embeds multiple links, including one to a known malicious redirector. The heuristics indicate a social engineering attack (ClickFix) and a security bypass attempt, suggesting the document aims to trick the user into disabling security measures and clicking malicious links. The embedded links likely lead to phishing pages or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.cc/wix?keyword=roblox+stuck+on+configuring 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_5ee0e4978d2f4d1aa929704d3dc48fbb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_eef65faab57c451da30947b4172d077f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_84f3a972375442739521796887dddbbd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a91264_542ad411429f45dcb760136b2c722307.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/078c79_b2e2fc9e0369427b9f1c79289a1f79f2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a1fb72_48c65fe9e68b4bc0bbee8b8c714dd03c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/70c1f8_e1ba96b3f105487b86d96f580ab52ffa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d3758e_818ff55ae16a4ddd92e33dd523c5bce9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/90423f_0c9d64cf2150421781026c361c36181b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fbca8c6e26074564ae006176727621da.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0ee06d60f0284a798a6b926a51b6b185.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a6e5e9_64f54123c1e846edb98d7c92823223d5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3ed1f_5fc5946dcbf2400eab683779eac5cb28.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f3ecbe_17e4e0e09942425d96130276006d47f8.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_off00006c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3F 5116 bytes
SHA-256: 2b74f4ccd840e7f6844381e7c8dda5fc469dff62ecbf933fdb4bb2718ea1adf9
font_01_sfnt_off00007dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC6 10380 bytes
SHA-256: 9243c602f1d2c1bf9bb35e8ede262935f98f857cabf40872e553604263814e55

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