Malicious PDF — malware analysis report

Static analysis result for SHA-256 cccb8a7f66ac24d3…

MALICIOUS

PDF

43.5 KB Created: 2020-08-07 09:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 461482f2dd552442b80c9e36e2738cb8 SHA-1: a4977b649ecc78df59bb8777a637f7bb0b8a497f SHA-256: cccb8a7f66ac24d37707aec488bc223abff712d9498f7234dd202bb303a19939
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Springing tiger pdf' and the malicious URL, suggesting a lure to a malicious site. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious resource.

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=springing+tiger+pdf
    • http://files.theindianexpresskadhai.com/uploads/1/3/2/8/132816165/womapebisemoka.pdf
    • http://files.montanoslandscaping.com/uploads/1/3/0/8/130814633/97bd0a1af29.pdf
    • http://files.gmfcf.org/uploads/1/3/1/4/131437139/815767.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/kanakadhara_stotram_lyrics_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3967/files/accounts_payable_end_to_end_process.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/xunemijisagobunisaduleg.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/volume_and_surface_area_of_cuboid_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/53419524772.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/94797808040.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/unicode_characters_table.pdf
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/82590569551.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/migavinilubapodoxip.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/domestic_abuse_definition.pdf
    • https://cdn.shopify.com/s/files/1/0435/4002/1407/files/36366604872.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_off00006e33.bin
e74a89e93b394f01f99c2c27c173ab268302ec3753be663f36254bad64d16761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E33 4892 bytes
font_01_sfnt_off00007eed.bin
7d9224d4750ee74c9668af3dde64873cda79bd4e98da4d3ab28678c3939cb24d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EED 9976 bytes

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