Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5912a1d98fbb5c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-30 23:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88d4950c884ace56a291a626e4d3f975 SHA-1: c522e20994caf3ed7fa704df58a7c7165bb4f63b SHA-256: 3d5912a1d98fbb5c6d9acde5e8e8ef6977449ac6212bda7c9e50217f2ec72b2b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=free+simcity+buildit+cheats'. This URL is presented within the document body, disguised as a lure for game cheats. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine results or distribute further malicious content. The primary intent appears to be redirecting users to a malicious site under the guise of providing game cheats.

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/wix?keyword=free+simcity+buildit+cheats
    • https://static.usrfiles.com/ugd/b8c837_246c0046a4ab40f8b875618f3232a841.pdf
    • https://static.usrfiles.com/ugd/b8c837_847600236a9d42ee85982da61d0b7367.pdf
    • https://static.usrfiles.com/ugd/4dd980_6196476d013446428050e3e00163b718.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e529965e6e147beb781697430368693.pdf
    • https://static.usrfiles.com/ugd/b914b5_9fbdd896be184462b3a23f198f33ac9a.pdf
    • https://static.usrfiles.com/ugd/b8c837_2da413f5cc3649dbbd2e5839352d23f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_99cd530dd41948248b703be9429a89b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d00699e14d084271a2a4c8d3ad75c5f0.pdf
    • https://static.usrfiles.com/ugd/6116da_0036e8028d5a4ea6b879e560590323b4.pdf
    • https://static.usrfiles.com/ugd/f65175_17de936bb88f4eadadf03c783117e5a6.pdf
    • https://static.usrfiles.com/ugd/d54300_5d0e6bb336744bbca9a894d499cee574.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d29f84383674b1c9f043a0dd805f1cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_779a8f071e7742d2b48e30c0235c4d51.pdf
    • https://static.usrfiles.com/ugd/b8c837_993970a48f704fc4939cf0e755477601.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9030ce3d0a24487bfa3df5b395c9017.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_off00006235.bin
2499e9a1ac293869a7d17adb9fc665d6e02900d7d71affe9e98ad051cfdc69c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 5376 bytes
font_01_sfnt_off00007453.bin
b349b12d825e8f84008c5301c43efcff671aca39375bc6ea5aec7f426a943d92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7453 9608 bytes

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