Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95b109fa5db7926…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 00:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b03e3317edf4cf1629d759df917f9ed5 SHA-1: 79285418545214674bc0b366340c4264edf03afb SHA-256: b95b109fa5db7926a03fd36849dc5cf58048bb90e966cbf8ba81a612a5352085
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a payment redirection lure. The document body, though heavily obfuscated, contains text related to 'Airtel money app', reinforcing the lure. The PDF also contains a mass external link farm, with many links pointing to Shopify, likely to obscure the malicious redirector. The primary malicious IOC is the ttraff.com redirector URL.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=airtel+money+app
    • http://files.sergeseiden.com/uploads/1/3/2/6/132681378/3205763.pdf
    • http://files.northcountryprinting.com/uploads/1/3/2/8/132816091/xowek.pdf
    • http://files.seasholes.com/uploads/1/3/1/3/131398560/bumisa_nufejomed_nirixa.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6357/files/87634835769.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1288/files/2744355279.pdf
    • https://cdn.shopify.com/s/files/1/0430/8441/5143/files/speech_organs.pdf
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/25778728226.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/33272301405.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/nyc_bike_path_map.pdf
    • https://cdn.shopify.com/s/files/1/0436/9773/3787/files/electrochemical_methods_fundamentals_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/vodojutedupep.pdf
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/sefenatavakomazowafaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/repikowe.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_off00006876.bin
b86590a92d0d923560770d954e58350822cf69613795cee4d5f69843a1d87d71
pdf-font-stream PDF embedded font (sfnt) at offset 0x6876 4880 bytes
font_01_sfnt_off000078f8.bin
ca4b67db19dc277f26c5637a9dd4513d5d3b649f5242aa4c49b25e29ee4d9ce0
pdf-font-stream PDF embedded font (sfnt) at offset 0x78F8 10468 bytes
font_02_sfnt_off00009cec.bin
82951d59e21f665f529e58bd00e1393421e70e61f12dbcf5ce3e8ea974a9abed
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEC 16548 bytes