Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeec3969c01a07fd…

MALICIOUS

PDF

43.7 KB Created: 2020-08-21 13:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adf7ee2a4038c6330891acb5e3fefc7d SHA-1: d464716081cb4a03b45bc7c23550aba992ff1d5c SHA-256: eeec3969c01a07fd0dfa63a8fa39925db6a709bc46ee30f658f4e635236ed809
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as piano sheet music. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be directing users to malicious infrastructure via a deceptive link.

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.cc/pify?keyword=huapango+de+moncayo+piano+sheet+music
    • http://muguzal.jordanpriceart.co.uk/uploads/1/3/1/6/131606490/6310405.pdf
    • http://pufir.morningfoxcoffee.com/uploads/1/3/1/4/131454106/47e39994418cb74.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5274/files/76040021986.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/gua_completa_de_calistenia_y_street_workout_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/jilobakanagek.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1344/files/latest_baby_boy_name_list.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/wovusedofutobemiro.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0180/files/angels_in_america_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/21200255816.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/reboot_training_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tepumesuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/6984539838.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/jizuve.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_off0000584e.bin
9fc8731633f69aa318a86e7fbaa8d4e6841a11ae3a3182edc8606eaae02c747d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584E 5304 bytes
font_01_sfnt_off00006a35.bin
208c2f8711469f7bba3c9f4360e67744dc99ad09ecc08a196d459ecd2b4bcc3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A35 13140 bytes
font_02_sfnt_off000093c9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93C9 4324 bytes

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