Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ed52d96e12f0d0…

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 00:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bde77c6c11cf1988233c71bfd4abaeb SHA-1: 6355e10ccfd5cb4db75408fed9a4ffb4562c7944 SHA-256: d6ed52d96e12f0d0e42f4cccaa478540248eb89244ddac0f9a28c3f160629102
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for 'current affairs in english pdf'. The PDF also contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content. The primary malicious IOC is the redirector URL.

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=speedy+current+affairs+in+english+pdf
    • http://vijukixe.alinjarralabradors.com.au/uploads/1/3/2/7/132712207/5721175.pdf
    • http://files.econspecialist.com/uploads/1/3/1/8/131872178/bivuz.pdf
    • http://files.laurenmmcollins.com/uploads/1/3/1/4/131406036/nogixizapidib_zezovumubuxefeg_wevusafadusa.pdf
    • http://files.ballenislessgc.com/uploads/1/3/0/7/130775229/savesono.pdf
    • http://files.stbleagues.com/uploads/1/3/2/7/132712324/jojinefevakivuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0409/0777/files/22697241156.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/67786967319.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/linspace_in_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/gobisewosuref.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/65857538550.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/67145600712.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/15206360242.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/fuwosov.pdf
    • https://cdn.shopify.com/s/files/1/0440/7528/6693/files/keturigubefove.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/15127636000.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/88176907347.pdf
    • https://cdn.shopify.com/s/files/1/0441/3269/6216/files/43523833032.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/luporanawagesifujap.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_off00005663.bin
d31c86847f53b656414c7ac54d54c62efcf9e3648d2474d5b4ed011158c4f15b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5620 bytes
font_01_sfnt_off00006986.bin
40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6986 3720 bytes
font_02_sfnt_off000074e8.bin
640f3d9ee069da0ccb7c2ef8c1d60b38ec40ac3ebdcc434b9a85967464549f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E8 10428 bytes
font_03_sfnt_off000098af.bin
ab96a561ac7fc3d8aae209aa05ebb0283a455fcb6a5a513db6501f5d88859969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98AF 6932 bytes

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