Malicious PDF — malware analysis report

Static analysis result for SHA-256 7320ce0006423236…

MALICIOUS

PDF

40.5 KB Created: 2020-08-03 12:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64e6397cc20bbd7e2cbdeee897a0e05c SHA-1: 2e0547d823ea6a2c1fe86e4ff698c9601cdc76ec SHA-256: 7320ce0006423236f96b851f8d7917faed7193ba4b8fe280e5cf6a5297ff86ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, many of which point to a redirector service known for hosting malicious content. The primary redirector URL is https://ttraff.com/pify?keyword=bloqueo+auriculoventricular+electrocardiograma+pdf, which likely leads to a phishing or malware download page. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content widely.

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=bloqueo+auriculoventricular+electrocardiograma+pdf In PDF document text
    • http://files.tomnet-utc.org/uploads/1/3/1/1/131163867/980264.pdfIn PDF document text
    • http://files.jennifergelber.com/uploads/1/3/0/8/130813301/zadilaxotal-molalarimute.pdfIn PDF document text
    • http://files.malonesfoods.com/uploads/1/3/0/9/130969982/4f266f55693.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/1/0427/4677/3660/files/bopominojebapete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/89120211642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0942/files/7957093971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6361/files/sogawiletutovugaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1991/0813/files/69155451013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/mavatodamupipinenubeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4311/0564/files/cookie_clicker_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/tarigimevaxojalikowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6179/6248/files/dokebalukapojeraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/lufujelujibegorojemok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/brinkmann_electric_smoker_manual.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 5

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_off00006086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6086 5532 bytes
SHA-256: a2b2ab91ac3cf3e082aaf8a54799d4edaf3b7227d26cee099ea93a694f7a7371
font_01_sfnt_off00007346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7346 9868 bytes
SHA-256: 81b6cedc337d19f8f4119593daa1ab62ccecb68fcff83a51e734e1bae198819e

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