Malicious PDF — malware analysis report

Static analysis result for SHA-256 3702e8c2f35805a7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-04 00:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c0b0fe42be39bd83118fcccfa1dfc2d SHA-1: 886506fbc1b0a413e455fd66650b277762e34c78 SHA-256: 3702e8c2f35805a7f12a094c13f0e78855786920bec30d9bbf42373907a6ded3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'ttraff.ru', which is known malicious infrastructure. The document body, though partially corrupted, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=psychological+testing+and+assessment+cohen+9th+edition+pdf
    • http://files.balloonsworldonline.com/uploads/1/3/1/8/131856186/gejetaw.pdf
    • http://files.cantsitstill.net/uploads/1/3/0/7/130776888/wasam-vanod-gemena-velozaluvopiwa.pdf
    • http://files.achievewithaimee.com/uploads/1/3/1/6/131606127/fc69d.pdf
    • http://files.coffee-a-roma.com/uploads/1/3/1/1/131164112/beputet.pdf
    • http://files.portugal-spainmarinesurveys.com/uploads/1/3/0/7/130776327/ceb020bc7.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/bomimelobaderexudajid.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/sosuwokobi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0053/4952/files/dilexaxumujonas.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/82622328009.pdf
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/30499923266.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/xenilogapepuwodonogop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7440/files/83382218207.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/astronomy_physics_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/3201/9097/files/23681527115.pdf
    • https://cdn.shopify.com/s/files/1/0434/1114/4861/files/mawobokitux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3357/files/jedibunojube.pdf
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/26433778995.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/63540693544.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b5f.bin
c444d502f8d98ac49a6cfaedf828b422c72a8f2ca74b0bf4602d4ff45917e700		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B5F 5520 bytes
font_01_sfnt_off00005df7.bin
87c9c143c43bac606f8a2dc89eff5cc596c5a8201c6e44a520ed8d14156c8da6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF7 9644 bytes
font_02_sfnt_off00007eb6.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 4324 bytes

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