Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc82b3f85179c19…

MALICIOUS

PDF

38.9 KB Created: 2020-08-27 23:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b653891b3d9efe1ba4f6c8119ef49af SHA-1: 1c2ce87d203b6b5751a03674573520735a3f62cd SHA-256: 9fc82b3f85179c195ace3e87a5e0604c21fcc0ec00922796caa96df6e86b7f26
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a lure related to 'Dragon Ball Xenoverse costumes'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be social engineering 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.com/pify?keyword=dragon+ball+xenoverse+costumes
    • http://mifilat.fcwellnesscompanyltd.com/uploads/1/3/0/8/130873998/sorikenejinimikur.pdf
    • https://cdn.shopify.com/s/files/1/0439/2547/1400/files/jurnal_penelitian_bronkopneumonia.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/business_management_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5048/4390/files/31497821885.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/tapepap.pdf
    • https://cdn.shopify.com/s/files/1/0432/4507/6647/files/command_and_conquer_generals_iso.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/vosijilabuga.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/dejagokerajaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3391/8616/files/netgear_wn2500rp_setup.pdf
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/werete.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/78165293930.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/sonejetegofipidaroris.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bef.bin
f4c03690d01c380044a66421cfca521e338c6c86292aa2d09da8c6b636a4d9c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEF 5388 bytes
font_01_sfnt_off00006e34.bin
aa6abd6a5aa44e5d2a632dc9ab123e7f993293a7efa2e61b18aefc64e31e65be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E34 9668 bytes

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