Malicious PDF — malware analysis report

Static analysis result for SHA-256 2567137b6873b832…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 10:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c27f48df50dc1bb1e3b2d9c541e9e420 SHA-1: e0a8b1637385d55a549362243a71535c63236c1e SHA-256: 2567137b6873b832c299898249ee710d39d2fe23e622a119b48c88113d593dee
234 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector infrastructure known for malicious activity. The document body and embedded links suggest a lure to download files, potentially disguised as games or other content, which is a common tactic for distributing malware. The presence of a remote-support tool lure heuristic further indicates a potential pretext for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=3d+brick+breaker+java+game In PDF document text
    • http://files.richardsorabji.co.uk/uploads/1/3/1/4/131406592/3d87d1d3e.pdfIn PDF document text
    • http://files.leapsandboundspt.net/uploads/1/3/1/8/131857120/vugumar.pdfIn PDF document text
    • http://files.mostblessedtrinityacademy.org/uploads/1/3/0/8/130874281/887201.pdfIn PDF document text
    • http://teveva.andrewedmundsprints.com/uploads/1/3/0/8/130814020/8f6ae.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/1/0432/1024/4256/files/iron_maiden_children_of_the_damned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/davoxufigutoruwozisame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/business_management_syllabus_for_shs_in_ghana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3540/5986/files/20643681454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/sowutokupazadalopurebujav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/beauregard_parish_sales_tax_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/74442624394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6409/2822/files/descargar_libro_de_armando_hoyos_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/64182776917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4665/6408/files/teamviewer_7_for_windows_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/android_home_is_not_set_appium.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_off00005608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5608 5460 bytes
SHA-256: b16fcda688f9ca45eb09bbeb03a426b92443b005b672a90dedfce8531166ee6d
font_01_sfnt_off0000688f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688F 18772 bytes
SHA-256: 69d1fb15590fecdf0c73a42c46f8c9c3a714c13487080635127adfeaa872cc89

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