Malicious PDF — malware analysis report

Static analysis result for SHA-256 366d128cd4a7cec6…

MALICIOUS

PDF

64.0 KB Created: 2020-09-12 08:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a776fcba273d5694903582d069e7ec12 SHA-1: 9ab6152198cb247efd1b4730a812293f185a554e SHA-256: 366d128cd4a7cec6e1220aa3020351bd02a1cce6fb884123d275dfe9ad29f523
202 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.me/wix?keyword=bookkeeping+reviewer+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bookkeeping reviewer pdf', reinforcing the lure. The presence of numerous PDF links suggests a campaign to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=bookkeeping+reviewer+pdf In PDF document text
    • http://files.babyfreebies2020.com/uploads/1/3/2/3/132303041/liwalime.pdfIn PDF document text
    • http://tamire.myhillchurch.com/uploads/1/3/2/7/132740763/vopewo-rebal-betuzolov.pdfIn PDF document text
    • http://zavas.llawithmj.com/uploads/1/3/1/3/131383791/4641505.pdfIn PDF document text
    • http://files.digitalbayllc.com/uploads/1/3/1/6/131637477/kagetowi.pdfIn 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_6a15653272244229a0a2a02fb1223f26.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/856cea_43de77be1ae74d8aa7924525ef105b80.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cb927_6c1cf160cf844e94b48b7b9f6e9dbe3d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9cc572_be60427ab5c04c4fb71ea10c3a3ae896.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dfb5f8_f65da040a83843aea6bce336a06c7cb5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3325f_41a8f953bcc34ccdbce24debc19e6261.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0d002d_e4b320018e0c4215a48afafaf24e5924.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/98857b_2c5321af6c564c4588eb187cc70c78aa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f67134_17a28db87c314ebf869402e26bb6f6aa.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_off0000be5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE5A 5056 bytes
SHA-256: d7c134b9970889c1e6a05a292997fbcfd72d7437a9a681359274b069a1ecf949
font_01_sfnt_off0000cfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBF 10412 bytes
SHA-256: aaac4bdddd57e284586492f150ad2c144256ff657cec0e07a997bab6e8d2b2f6

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