Malicious PDF — malware analysis report

Static analysis result for SHA-256 25aacae3823eb35a…

MALICIOUS

PDF

45.8 KB Created: 2020-08-01 15:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 633ee42728cf8b2e6b8a3a08d39a057c SHA-1: 212f4b315592689f485cd3368bf3418192a2bbdd SHA-256: 25aacae3823eb35a757a7cd234c14f3eb6a9b900aa0ec5dc9dfc37d7c83ebe48
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body also contains text instructing the user to 'Copy to user', and a heuristic indicates a 'Clipboard command execution lure'. This suggests the document is designed to trick the user into executing commands via their clipboard, likely leading to further malicious activity.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=copy+to+user In PDF document text
    • http://files.danielleguentherphotography.com/uploads/1/3/0/7/130775393/ridepafob_zamowiz_jaxitozibe.pdfIn PDF document text
    • http://files.knipa.net/uploads/1/3/1/4/131453024/kikudan_sewoxipoturu_rizabuzu_wepev.pdfIn PDF document text
    • http://files.schroeder-capital.com/uploads/1/3/0/7/130738548/cbb78f3d.pdfIn PDF document text
    • http://files.coachmenowau.com/uploads/1/3/2/7/132741149/mefufimov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/65357563745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/pagaxavorajiletawizabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/zesapobunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/tewupefitawupevaniral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/zimowobutujejobetopeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/93105962883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1070/1981/files/dofumirufukakuwik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/hunger_games_for_minecraft_pe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/21250323080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/momowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3232/files/vizuvivurarawuguluj.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFF 4424 bytes
SHA-256: e9b14aac0ee0c217567960cf9691afad931c90c1082a845e72c796c7b04cfe6f
font_01_sfnt_off00007a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2B 10080 bytes
SHA-256: e40ec73e7c85600b51ed98a398d906d642ee46c58202576755f4e03df871237f
font_02_sfnt_off00009cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CAD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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