Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9954750c474fd4…

MALICIOUS

PDF

40.1 KB Created: 2020-08-08 13:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cabcd3de66ee8adeed32c4944e8198a1 SHA-1: 7d7828813a6dc81eb146189bb9ff6dcfec0b0fa2 SHA-256: ca9954750c474fd4d00332c9dbbb5e20e57450c6969cc8a186d3f03dda615fb9
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=11th+science+biology+book+in+english+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to trick users into downloading further malicious content by disguising it as educational material.

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.cc/pify?keyword=11th+science+biology+book+in+english+pdf In PDF document text
    • http://dobuputu.prohuntersights.com/uploads/1/3/0/7/130775732/tejizupiva.pdfIn PDF document text
    • http://files.partybartendersandwaiters.com/uploads/1/3/2/7/132710679/95945538f19.pdfIn PDF document text
    • http://files.drhafezi.net/uploads/1/3/1/4/131407164/totobo.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/1/0433/9538/3446/files/63103262708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/rapibeliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/razovute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/muxutafokexebewutariwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/duvufivukira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/loxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/21635047109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/airport_security_management_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/the_sixth_sense_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/85979611455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8221/9674/files/area_of_circles_and_sectors_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/73219372810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9202/5249/files/41956055123.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 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_off00005ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDE 5372 bytes
SHA-256: 2d5a4a29f95e13cf189e89084ed61be5b71d38cc2874abe3c8a6f609d74afc98
font_01_sfnt_off00007134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7134 9980 bytes
SHA-256: a45a951dbfddaa71d3c8e305be2f58594793a76d44ec734f1e4655c7c2c269ac

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