Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceaae568b5464e3b…

MALICIOUS

PDF

46.3 KB Created: 2020-08-21 14:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d05dc27765f99b52b9cb621d34550ae0 SHA-1: c3b1c22bb18ee2cd8978be14d2f97ac77e80f3b8 SHA-256: ceaae568b5464e3b37b56529f581aa4097f633d6725702bff7dab5175bfe7c0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector link pointing to malicious infrastructure, disguised as a free encyclopedia download. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the primary redirector URL and other PDF links, suggesting a phishing or scam attempt.

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.ru/pify?keyword=world+encyclopedia+pdf+free In PDF document text
    • http://files.northeastturtles.org/uploads/1/3/1/3/131378923/zudenatasapemoj.pdfIn PDF document text
    • http://rajul.red2green.org/uploads/1/3/0/9/130969465/wijeri_zilavowa.pdfIn PDF document text
    • http://foroxijo.cassiusapparel.com/uploads/1/3/2/6/132681352/2552575.pdfIn PDF document text
    • http://files.norwoodcycleclub.org.uk/uploads/1/3/1/3/131384281/361887.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/1/0435/7586/9599/files/hallelujah_to_the_lamb_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/5571812388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/byzantine_catholic_prayer_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/vipajobuwonizowalofedude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/84438071633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/68901200910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/vubikobaburemorogusu.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 4

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_off0000771d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771D 5088 bytes
SHA-256: 8b7a584857b95d1920fa3e4b92c1d08e8838105e0fbc51aa76bbce680d76d87c
font_01_sfnt_off0000888e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888E 10872 bytes
SHA-256: 2437432f968f6c67dbc43becdcac7881f23546dae8dcf172bba68970d32c4c5a

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