Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc128b1f50bbca5c…

MALICIOUS

PDF

73.4 KB Created: 2020-08-18 15:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a54354d7f64679ea988aa8b9a006207d SHA-1: f18e972d1fe4b5d089614218b9020a014ce30e6f SHA-256: cc128b1f50bbca5cc50c7278b55937063993715ea97df9bfa9839e16d734758d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Barangay 143 episode 1' and the malicious URL 'https://ttraff.com/pify?keyword=barangay+143+episode+1', suggesting a lure to a potentially malicious site. The presence of a large number of SEO-optimized PDF links hosted on Shopify further indicates a link farm designed to attract traffic. 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.com/pify?keyword=barangay+143+episode+1
    • http://files.peomichigan.org/uploads/1/3/0/9/130969220/668b981a4a6.pdf
    • http://files.newtitanprint.com/uploads/1/3/1/3/131380728/8448655.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4439/files/89228987510.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6781/files/n_d_p_ka_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/99880610961.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/familia_coreidae.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/17939705028.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/51616456730.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/gizujis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/4745770367.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/vawovimukojagulav.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1518/files/pidetoxorasakizon.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_off0000d328.bin
a0613cd75deb022221086e2f608b722ec286a09c53886c8893b75f2aee38b778		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD328 3396 bytes
font_01_sfnt_off0000df2d.bin
2d5e3b24872e72679a6e8e6cd83546efce06110c050be0b93460db879b4dff1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 5552 bytes
font_02_sfnt_off0000f222.bin
640e9763ae80130296c318a878b52ef8c4727b9ee72f0aeb8c1e5ce80876f919		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF222 10804 bytes

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