Malicious PDF — malware analysis report

Static analysis result for SHA-256 39c620464936ce6e…

MALICIOUS

PDF

42.0 KB Created: 2020-07-28 19:14:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 232a02c69f04ced15468f748b50d73cc SHA-1: 4a9bc2f0e2b5122b99402d76fd68063c6d01e305 SHA-256: 39c620464936ce6ef8d56b008e7c338a283fe0b348186176487d60161aef30bb
202 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a social engineering lure to trick users into updating their Chrome browser. It also contains a PDF link farm with numerous links hosted on Shopify, with one prominent example being 'cdn.shopify.com/s/files/1/0432/9200/0412/files/livujiw.pdf'. The document body, though heavily obfuscated, contains text fragments suggesting an update lure.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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/pify?keyword=update+chrome++free In PDF document text
    • http://files.citytourstravel.com/uploads/1/3/0/7/130775331/gisafopiti_fubodirukad_bigizikexomalo_rixefotevutux.pdfIn PDF document text
    • http://files.northcountrylittlesblog.com/uploads/1/3/1/0/131069860/wirojanalikix.pdfIn PDF document text
    • http://files.freenovels.net/uploads/1/3/1/3/131398360/wunixur.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/1/0432/9200/0412/files/livujiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4513/3215/files/61590181603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/66110288385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/45786761917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6680/files/girudoxixolone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/gigib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/82362000959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5127/6696/files/5019708222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/nurabuwukokokomikik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/janulidatamosixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/fakegifabubudilinol.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 3

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_off000066ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CE 4812 bytes
SHA-256: fbb59a35f5bb93b6fb8e57ac46cc6a45ef23e1d587327c262e159796b58b2cf7
font_01_sfnt_off0000772a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772A 10564 bytes
SHA-256: d1e8a720c1b857109f166f79c15d1ea80c0c37ad736d58a8e810c520a101a03e

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