Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e5c8741c69332d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 23:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e84999bfa0150146c8239342e16211f SHA-1: d03733c0476ed9941467f16cd2aef63911a82492 SHA-256: 93e5c8741c69332d86be4b742f55405bb59b03d8e8795dba4114e990c0f186c3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same redirector URL and other URLs that appear to be part of a link farm designed to attract search engine traffic.

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=stop+cinema+apk+buffering In PDF document text
    • http://files.justforyouspa.com/uploads/1/3/0/7/130740323/e5ea9d460d.pdfIn PDF document text
    • http://files.focused-fitness.com/uploads/1/3/1/1/131163601/wudazogerunorugaladi.pdfIn PDF document text
    • http://xidulad.pumpkinandsprout.co.uk/uploads/1/3/1/6/131636612/483ff.pdfIn PDF document text
    • http://files.mauitravelpartners.com/uploads/1/3/1/1/131164398/9644306.pdfIn PDF document text
    • http://zimixi.mhschoirs.org/uploads/1/3/0/9/130969465/towejewezu.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/1/0433/8830/5575/files/windows_10_pro_version_1803_iso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/weitere_informationen_englisch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/battleships_game_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5545/6164/files/bsc_computer_science_2nd_year_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/71974699378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1549/9939/files/cornerstones_of_managerial_accounting_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/menujuvapubetexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/7469/3794/files/autonomic_nervous_system_pharmacology_mnemonics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7354/files/read_tsv_file_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9154/6532/files/peter_pan_and_wendy_play_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/pdf_compressor_mac_software.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_off0000616a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616A 5432 bytes
SHA-256: c1e73c7f75734628070d89728b2607e879d262d918f2b9fffa34fcbc34f6c537
font_01_sfnt_off000073c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C4 9936 bytes
SHA-256: 420ffad68d6d42850cc6a1766dc4c350c51e19d3301c2ed56e15a58c4431f542

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