Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3997f18c94dab13…

MALICIOUS

PDF

66.7 KB Created: 2020-08-08 08:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cfe9c16218537844523da6c98a5939c5 SHA-1: a627266f00440b77d2083672baa82cba8056fa76 SHA-256: b3997f18c94dab13b186998905275016cdd276e283a35d65ab8d1b2ed0c87c54
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, which in turn points to a malicious URL. This indicates a phishing or scam attempt designed to redirect users to malicious content. The embedded links within the PDF document body and the PDF's structure suggest an attempt to exploit users through deceptive content, likely for credential harvesting or malware distribution.

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.ru/pify?keyword=arithmetic+mathematics+book+pdf In PDF document text
    • http://files.cougarstrongracing.com/uploads/1/3/1/3/131378990/rakotaziwogatavo.pdfIn PDF document text
    • http://files.mralder.com/uploads/1/3/0/9/130969855/sideganojufaze_xukitusas_faxabuxovi.pdfIn PDF document text
    • http://wusom.wbdesign.info/uploads/1/3/1/4/131454012/e401bed.pdfIn PDF document text
    • http://xolod.spotupshooterproductions.com/uploads/1/3/1/3/131383314/e468b65caf.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/1/0429/8299/8170/files/95713665033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7293/8399/files/xevotepetoruwokutuvojizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/voredaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/66205842179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9769/4114/files/lightning_protection_system_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/88567632980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/82183680909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/tamufuxugepopizafez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/dipenufele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/babexumisajedojates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/20332393160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/43150539275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/86156140022.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_off0000c91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91A 5556 bytes
SHA-256: e1d84260c90dae7659063b9a48f0ad600fb5076d3641a93ea8e62d84bacd41b8
font_01_sfnt_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 9888 bytes
SHA-256: 58511f9211719b72e9eecd155b8ddbe4eda31720516ebeac64aa3cd848899562

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