Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7abad641aebea6b…

MALICIOUS

PDF

41.1 KB Created: 2020-08-01 22:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 598e3b34986125e5f7101e3eef2e3f44 SHA-1: e405c9c46cad49ede5d66937dffe538166db0e62 SHA-256: b7abad641aebea6b12f3f17ab8c16af29c6d74a73e9d792c1af6e54ea4e1e2d8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF SEO link farm. The primary redirector link, 'https://ttraff.ru/pify?keyword=mac+show+desktop', is flagged as malicious. This suggests the document's purpose is to redirect users to potentially harmful content or engage in SEO manipulation. No scripts were extracted from this sample.

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.ru/pify?keyword=mac+show+desktop
    • http://files.graindesigns.co.uk/uploads/1/3/0/9/130969954/3681755.pdf
    • http://files.katillacmoments.com/uploads/1/3/0/8/130813448/4024200.pdf
    • http://files.maeganbeale.com/uploads/1/3/1/4/131453219/vixox.pdf
    • http://files.thecarolinasportsdistrict.org/uploads/1/3/1/1/131164431/3519514.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/61446713348.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/29390543582.pdf
    • https://cdn.shopify.com/s/files/1/0437/0857/9993/files/62995177118.pdf
    • https://cdn.shopify.com/s/files/1/0440/1260/1502/files/56887893607.pdf
    • https://cdn.shopify.com/s/files/1/0435/0246/9285/files/182113885.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/54308439594.pdf
    • https://cdn.shopify.com/s/files/1/0430/8271/1201/files/37558721599.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/11656642225.pdf
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/52080294018.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/lofavajudusafomukeduga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/85911300948.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_off000062f6.bin
8df053eca2491a0c3627c4fdee8515486518c9993c9a851ff76c31dcfa9711ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 5196 bytes
font_01_sfnt_off000074bd.bin
09cfd9e6653a1bde4a2af008b84f5a242fc533187932e9819bd35bc5204b674f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BD 10284 bytes

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