Malicious PDF — malware analysis report

Static analysis result for SHA-256 83db7c4cdd7ad8f0…

MALICIOUS

PDF

53.1 KB Created: 2020-08-03 16:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e47777675f670d5d6646a75120ca70ec SHA-1: 4c9a2f9d58f6834a6604587045a18e38be1d2a9a SHA-256: 83db7c4cdd7ad8f02315ecc8ab7382e988bc6fd0f2f5fad050bd79763fff3e97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=autonomy+in+nursing+pdf', suggesting a phishing lure for a document titled 'Autonomy in nursing pdf'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to attract search engine traffic and lure unsuspecting users.

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=autonomy+in+nursing+pdf In PDF document text
    • http://files.edgerealtyph.com/uploads/1/3/1/0/131070722/zemenofapituz-dagaxexerepusin.pdfIn PDF document text
    • http://files.theelectricchairman.com/uploads/1/3/1/1/131164063/61f7a9b.pdfIn PDF document text
    • http://files.marencoartrestoration.com/uploads/1/3/2/6/132680784/d74d8380c0c8a70.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/1/0431/5011/4978/files/nuxojekafoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3123/files/85914470646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4492/1766/files/nuvar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/galuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/51827366216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/vuvuvijomezimopizam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/32841598726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/debivujenozuvete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/96466274240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7973/6223/files/nuzatasurazuvemonuruxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/kofifogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/21642023154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/85332214981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0545/2193/files/31775076671.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 6

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_off000090b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B4 5212 bytes
SHA-256: 5a1033d4a7d0b79d0e9e9760a9824300f2cc2cca8a8f65c385f41303b91972d5
font_01_sfnt_off0000a26c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26C 11400 bytes
SHA-256: dbc89baebb317e5f46bc324ff8105047ae15ef7a71d3661d82b02aa036bb63b8

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