Malicious PDF — malware analysis report

Static analysis result for SHA-256 65dc15256d8104d0…

MALICIOUS

PDF

33.3 KB Created: 2020-08-25 00:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b7de131b3192d023fe1e313bfa782bc SHA-1: 9a1704921eaf24dbaf9677087a614a32b9114b4e SHA-256: 65dc15256d8104d0c42e280994bd83d5b9a55f4efba3b9a7949e72283d533d02
154 Risk Score

Malware Insights

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

This PDF document contains a link farm and a direct link to a known malicious redirector. The primary malicious link is https://ttraff.com/pify?keyword=diagrams+of+the+eye+and+ear+worksheet, which is likely used to redirect the user to a further malicious destination. The document's structure and embedded links suggest a phishing or scam attempt, masquerading as educational material.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=diagrams+of+the+eye+and+ear+worksheet
    • http://files.winniwoodsfarm.com/uploads/1/3/1/3/131383613/dupodex_vapakigawalav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/7742/5559/files/bikexisejefirokemiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wojifuxazax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/31936396035.pdf
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/sodapatakibab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/fubilijimibakevewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/kindle_to.pdf
    • https://cdn.shopify.com/s/files/1/0435/5584/8355/files/conjunctions_to_express_time_and_cause_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8320/2711/files/rirafuliboni.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004417.bin
af47e10ecd25b310b40c27c23b6af88ee214161d935629d3387f678b1fbedfe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4417 5544 bytes
font_01_sfnt_off000056e9.bin
ef04e30c2a968ba9ec8b6ffa746c80c4d05cb22a7ef35fa82af702073bb4e0c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E9 9992 bytes

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