Malicious PDF — malware analysis report

Static analysis result for SHA-256 b925c9b67c61b6ab…

MALICIOUS

PDF

35.3 KB Created: 2020-09-18 22:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b76712ac555236cd3863f91ad0569f6 SHA-1: 8688bcc03a4dc7f2f99c4c3606da770e10963fbe SHA-256: b925c9b67c61b6abba13e9631123535386140b3f7708532a5872cea7d962f473
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with a primary focus on redirecting users through 'ttraff.me'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=nova+launcher+beta+apk+mirror', suggesting a lure to download an APK. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector link further supports this assessment.

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.me/wix?keyword=nova+launcher+beta+apk+mirror In PDF document text
    • http://files.petermichaeldavison.com/uploads/1/3/0/8/130813982/bokavifurenis.pdfIn PDF document text
    • http://files.elizabethfremantle.com/uploads/1/3/2/8/132815183/9829212.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/68773306833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/attachment_theory_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2253/2251/files/different_types_of_capacitors_and_their_uses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/ceasefire_agreement_2003.pdfIn PDF document text
    • https://dc5d5f11-9741-4885-b5f3-88840463cbcd.filesusr.com/ugd/2f3ac6_4dfb609d2613491c9ac429573eb0c8a4.pdf?index=trueIn PDF document text
    • https://38451b37-9ef7-471d-8d05-3da618c3ea07.filesusr.com/ugd/f14cf6_511e15eb0c5543ae9e383301f452145d.pdf?index=trueIn PDF document text
    • https://c30dda13-3568-4891-9f90-f5946502bb87.filesusr.com/ugd/b14caa_cc1bc5f533da4a6584d3f3ae5603660a.pdf?index=trueIn PDF document text
    • https://22158411-c1ad-4aa1-b7f8-9b095fc1ab5e.filesusr.com/ugd/681527_d838005f7e8e4921ab1dc36bc19a2661.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 7

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_off000045bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45BC 5228 bytes
SHA-256: 32cd7e1494a4ecc6674699e3cee900a4fe184b06a8d89269de12eb9b4c108030
font_01_sfnt_off00005764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5764 12872 bytes
SHA-256: 2b9ac6e03e8c43d88ea632a99edbe7c5f94d1e74d61855d302e8601f49ec0848

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