Malicious PDF — malware analysis report

Static analysis result for SHA-256 0126daa3d6f93906…

MALICIOUS

PDF

40.9 KB Created: 2020-08-29 21:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 510acccf1d5f2420130b7aeae551ce94 SHA-1: 07e4e0e48f9c6c7d058ffee2027bd953658d1747 SHA-256: 0126daa3d6f93906bb4780fe31ce7880d140c8ee6399802198408cbfd5452394
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains multiple heuristics indicating malicious redirector links. The document body, though heavily obfuscated, contains URLs pointing to a redirector service (ttraff.com) which is known to host malicious content. The PDF also contains a large number of links to external PDFs, likely part of an SEO spam campaign to drive traffic to malicious sites.

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=corundum+ingot+skyrim+id 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/f09a9d_38ad9201f60c4cbaa25affaf12031b38.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f60e6bf37bba49bab33a35556f3a8162.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b03186a7889a48b0953badab8c95f49f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b598d61539d341b69596c25235f27f7c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_66e615173dc842f485a4b6990aa8b426.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/39cb9d_9b1a112e46ec4e1398c5bfb3f5b35b71.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a6b1f197b51947cfb8d0d19ce9cda23c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b41ed9564edc49e481e31d1d9dac9b30.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/98e298_2d19fbc4b788401fb155d362d79e8c75.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_de817e6e5a23422ca92ce706d3a67a46.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_2ac059802fc34f08872ac0a45fc587c4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a47dd791f8354667970fb3e2ffea5297.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1d64af_a0dc7548380446cab191b048122a41e2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9dedc56197484533b1324d7af58c9926.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f0e51d_d489c07c44ac4e24a7cec96e0c84f1a2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5760 3312 bytes
SHA-256: 19fe6d3511270ee3ff4fbce704f5f4a9fb9182a4344e37e40a38d55828b07e20
font_01_sfnt_off00006341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6341 4976 bytes
SHA-256: 04e3cc68997ab295c1fd533e95f51494c12ddf1bf23990858543b1d2c6d23afb
font_02_sfnt_off00007420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7420 10344 bytes
SHA-256: a6f7cf8e98c12db4eaddf901de602421314bbca65801fa70e332e5ed7e63d375

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