Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba6e8c6286ec30e…

MALICIOUS

PDF

63.9 KB Created: 2020-08-14 08:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b981790d1eb6a5613d20f5ced7b4f258 SHA-1: 86a42e15e8ac7bf4d6490e395c1bc3cf60c45af6 SHA-256: cba6e8c6286ec30e6fe5c121860956679e207babb6a7c4c982b0eff428dae41b
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'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, with the primary one leading to a Shopify domain. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.com/pify?keyword=chaupai+sahib+written+in+punjabi' is the primary indicator of malicious intent, likely serving as a lure to a malicious site.

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=chaupai+sahib+written+in+punjabi
    • http://files.genealogybycindi.com/uploads/1/3/1/4/131407233/8c7812890fe.pdf
    • http://fukikep.therenaissanceinstitute.com/uploads/1/3/1/0/131070998/5172625.pdf
    • http://wedinesul.fadsyukon.com/uploads/1/3/1/4/131408159/f12b377ba9f.pdf
    • http://files.musemodelsdarwin.com/uploads/1/3/2/6/132696351/7980892.pdf
    • http://zujejune.susannahbrough.com/uploads/1/3/1/1/131164250/sulobozotirolikowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3496/8213/files/vinunanopaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/figexuvonoratusesepemovo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/accounting_for_financial_instruments_cormac_butler.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/19004915519.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/warizanuperotimufizigar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/32793284952.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/97259483231.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/wumipuvejomokepitosim.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/a_first_course_in_abstract_algebra.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/archangel_s_storm_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/35267241186.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000872f.bin
28e5899368efb9ac4171de84eb1777235dcffa6d480f87ef326131dd60499337
pdf-font-stream PDF embedded font (sfnt) at offset 0x872F 5088 bytes
font_01_sfnt_off0000987e.bin
6ce3ed3d0cf168fbf74d6eb321148d5efc31cda11559831b77020f7d4c9f4c8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x987E 3740 bytes
font_02_sfnt_off0000a3f8.bin
be9e12a8afa0f28d8c1d7f1d4f55cba2f4dc2f852ac773dfac38c7b0ed047a4a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3F8 9776 bytes
font_03_sfnt_off0000c2ea.bin
f198f6fc87c1e01368b8ca725c80bc836f310043f67e2b2e8a15b920c7a16aa5
pdf-font-stream PDF embedded font (sfnt) at offset 0xC2EA 14284 bytes