Malicious PDF — malware analysis report

Static analysis result for SHA-256 599c32c900388a74…

MALICIOUS

PDF

37.4 KB Created: 2020-08-31 23:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401c813d8a3a14a5026bfaa4dda04a67 SHA-1: 0e6631e2dfee5cb025ec666238784a55066014d1 SHA-256: 599c32c900388a7451093d07be86702bc960d96e2d43744f1523f92cf9444a5a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=crystal+reports+basic+syntax+case+statement'. This URL is likely used to redirect the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to game search engine results or distribute malicious links. The document body, though heavily obfuscated, contains the same redirector URL and other PDF links, reinforcing the malicious intent.

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.me/pify?keyword=crystal+reports+basic+syntax+case+statement
    • https://static.usrfiles.com/ugd/65b209_f6beb3ae64fd48d39d48eb189c1d26c8.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_17e8afdebe90440796a0accdc3f3e864.pdf
    • https://static.usrfiles.com/ugd/4d400c_1780fc0484554b0c9510136762a5744a.pdf
    • https://static.usrfiles.com/ugd/067ecb_d3d696cee2e84ae790366372830e70cf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/79390317946.pdf
    • https://cdn.shopify.com/s/files/1/0436/0385/3469/files/kimozazugiwifokopasetam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2544/0669/files/45610808399.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/tupotomorilafebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/statistical_modeling_by_wavelets.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/46883145852.pdf
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/mogadekakodunogoki.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b5dd9cdd6584393835540a1e9ad4517.pdf
    • https://static.usrfiles.com/ugd/c0fca2_c4181d4117794c0292ba998e7dc90c08.pdf
    • https://static.usrfiles.com/ugd/769f78_14a0eedfeb21407583a68944118a3b25.pdf
    • https://static.usrfiles.com/ugd/8b49c6_8261f07014ff4914bc288ecde6a2645c.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_off0000529a.bin
b0e48422c2c75e6dced950791c7262d7e2643af7b821fe4a95cbb8f9c23aa928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x529A 5292 bytes
font_01_sfnt_off0000648c.bin
928310b5a586fe5b36cd51178a9d3ad6699182bbe098629b63b8da65324e4c64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 10512 bytes

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