Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f22733ca820d497…

MALICIOUS

PDF

42.1 KB Created: 2020-08-05 11:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f5b2fb95981293b3363a43abc78b82c SHA-1: e627e76cc74763c1c2b72c294b5497e6d096be66 SHA-256: 7f22733ca820d4977c65fbc31955289d828a60d3039e281fdfbeb76d4391af27
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector (https://ttraff.cc/pify?keyword=bestiariusz+s%25C5%2582owia%25C5%2584ski+pdf). This redirector is likely part of a link farm designed to trick users into downloading further malicious content, masquerading as legitimate files. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=bestiariusz+s%25C5%2582owia%25C5%2584ski+pdf In PDF document text
    • http://files.foxfiregalleries.com/uploads/1/3/1/8/131856446/gulidaxas-zurasa-tetidafuxizi-kelila.pdfIn PDF document text
    • http://files.dorkygringo.com/uploads/1/3/2/7/132710491/jupesibekokibo.pdfIn PDF document text
    • http://files.firstlutheranpreschoolec.com/uploads/1/3/1/4/131406082/7026437.pdfIn PDF document text
    • http://files.ewalkthrough.org/uploads/1/3/1/3/131379792/03dc0.pdfIn PDF document text
    • http://files.languageartswitmsbell.com/uploads/1/3/0/7/130776037/37690.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/1/0430/5823/3493/files/sumasaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3440/2216/files/eating_plan_for_high_cholesterol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/29792147970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/71156772256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/sogenivorivonixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1285/2632/files/psicologia_autoconhecimento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/8208550153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/57644613547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/48050564511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/46226520585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/61288158151.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 7

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_off00006362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6362 5440 bytes
SHA-256: 7fbcc895a619394d7a47d2f13900c8613c34bb6f0526efacaff7129a6cfda104
font_01_sfnt_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 11356 bytes
SHA-256: a19bc91c633aff827969ac84affe57944ac902c0afdb7aeceabba6373c84dc10

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