Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a7cfad2262bbc3…

MALICIOUS

PDF

54.8 KB Created: 2020-08-07 09:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc0a94c3a2a32be6533d050db06f13eb SHA-1: e120ec97fafce11a3b6987de2693211ea622b37b SHA-256: d9a7cfad2262bbc3b72d8520d502b34116b922de534cd15e3d15dac62ee69680
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and 'SE_INVOICE_LURE' suggests a deceptive content strategy. The primary malicious URL, https://ttraff.cc/pify?keyword=java+design+patterns+tutorial+pdf, is likely used to redirect the user to further malicious content or downloads.

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.cc/pify?keyword=java+design+patterns+tutorial+pdf In PDF document text
    • http://files.phsboosters.org/uploads/1/3/0/8/130813696/takorisobemanipeje.pdfIn PDF document text
    • http://files.centertriathlontraining.com/uploads/1/3/1/1/131163533/7624e5a013.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/1/0429/1392/3228/files/88455141292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5868/files/dictionnaire_anglais_francais_gratuit_tlcharger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/xujowunotis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/jolunizepizivep.pdfIn PDF document text
    • http://files.pec.us.com/uploads/1/3/1/4/131437919/64c5fd7747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/aoac_international.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/zewigenewaseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/38128262725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/vadepajok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/rowonurexusufapofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/89330492637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/topijunitazeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2907/5880/files/fractions_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2264/files/bestimmter_unbestimmter_artikel_daf.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_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 5256 bytes
SHA-256: d05bc5c3c9ff52dd76c13d0d5ae68eb4a2e51ccce20546cea5fc37fc02defc78
font_01_sfnt_off0000a411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA411 12936 bytes
SHA-256: 88bc1e952e42e8b1d3bedbb81ae8a4a9eddc597f03dbf19646d589e6acde9e24

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