Malicious PDF — malware analysis report

Static analysis result for SHA-256 247c2bf1d3622791…

MALICIOUS

PDF

50.2 KB Created: 2020-08-13 15:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f2c4457245b2b862f8f5f326d09b4b7 SHA-1: 11c8d38cdcdba1fb875e0cf60a9d8dd8a26850c3 SHA-256: 247c2bf1d362279187795f08e51759d3240a8d7669a5480dae294c09f93c4be4
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate document downloads, but the primary link redirects to a known malicious redirector. This suggests a phishing or malware distribution attempt. The embedded URLs, particularly the one pointing to 'ttraff.com', are indicative of a lure to a malicious site. The document body itself is heavily obfuscated and contains numerous URLs, reinforcing the link farm heuristic.

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.com/pify?keyword=antenna+and+wave+propagation+by+kd+prasad+pdf In PDF document text
    • http://files.ogrowneyns.ie/uploads/1/3/2/6/132695813/kobetowop.pdfIn PDF document text
    • http://files.erocmusic.com/uploads/1/3/1/4/131453252/578cc6d2d460135.pdfIn PDF document text
    • http://files.mycorbintoncommons.com/uploads/1/3/0/8/130813829/f4ffe2c60f8.pdfIn PDF document text
    • http://files.thecampuspathfinder.com/uploads/1/3/1/4/131453944/99623748.pdfIn PDF document text
    • http://files.sensualtigerholisticarts.com/uploads/1/3/1/4/131452958/ririxigev_jarixuderisoluv.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/1/0430/6737/5770/files/daxurabafatix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0545/1174/files/nebizusuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4869/5958/files/tepejosepofizugif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/gugel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2465/7056/files/glencoe_mcgraw_hill_algebra_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/41198477285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/61147422728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/junowubuvik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8485/8022/files/waiting_for_godot_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/puzedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/igcse_chemistry_formula_sheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7614 5624 bytes
SHA-256: 6383d51e1758068665a52ba25207de1c4071df813dbd02c18b36d7826e4d1225
font_01_sfnt_off0000895d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895D 2116 bytes
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
font_02_sfnt_off00009327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9327 11232 bytes
SHA-256: d9855695bbe280fa6bd5127b2cc93c22e28e69c3db22828d54e50a6c64638122

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