Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af780c8726618f6…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 15:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30e0f55101cdb77adaf6ed70ae7ce247 SHA-1: 063e7f7db127b9920c20d8bcb4458d0d68b9723e SHA-256: 6af780c8726618f610a648bd8beb4b858ff4d5fe47810b18efeb75d616fb579b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, with one identified as a malicious redirector to 'ttraff.com'. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or malware distribution. The presence of numerous other PDF links further indicates a link farm or SEO poisoning attempt to obscure the malicious destination. No scripts were extracted from this sample.

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=daily+attendance+sheet+pdf
    • http://files.misswolfeskindersrock.com/uploads/1/3/2/8/132815008/gaxarop.pdf
    • http://files.eomec.org/uploads/1/3/2/6/132681452/5531871.pdf
    • http://files.rooibergsafaris.com/uploads/1/3/0/7/130776196/2676ab8d192.pdf
    • http://files.halfpintaussies.com/uploads/1/3/0/7/130739131/f9eb0b7c6cd6b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/niwojenusafizavoveribajo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/89575123095.pdf
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/warutir.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/pafoponimexog.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/bilingual_education_in_the_21st_century_a_global_perspective.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/53340626343.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/didosurabifuri.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/gabidolobikekufinanotig.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/capacity_planning_and_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/48190744163.pdf
    • https://cdn.shopify.com/s/files/1/0439/2737/1931/files/rufojijuwogin.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/21710613653.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/wategapegos.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/soxaroxapafumodekif.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_off00006e0d.bin
64277f5472983c7459f6704fc6ec15638fbe0ead0f24482ea8277e699ace24a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0D 5248 bytes
font_01_sfnt_off00007ff9.bin
c4a590c9f53d1ede7fb9ccfc03c6a3c78273e805b6da6672a6d01a971f9c41f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF9 10040 bytes

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