Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc09ebfee99b6ea2…

MALICIOUS

PDF

50.3 KB Created: 2020-08-31 06:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a24e065af60ddd851a4ae9ef42631b24 SHA-1: 6fb97d30d4be11329c161fb396b2aeb7e2b94ca0 SHA-256: fc09ebfee99b6ea2a6949f97378b13ec11806cc252c493307b36a29a47fb3cd7
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a driver download for an Epson printer. The document also functions as a link farm, pointing to numerous other PDFs hosted on Shopify and static.usrfiles.com. The primary malicious URL is https://ttraff.ru/wix?keyword=epson+stylus+sx235w+driver+download, which is likely used to distribute further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=epson+stylus+sx235w+driver+download
    • https://cdn.shopify.com/s/files/1/0433/0160/1444/files/6369875182.pdf
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/nibir.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/functional_areas_of_business.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_933a5667541f4796b0ab1b451a27de41.pdf
    • https://static.usrfiles.com/ugd/3bf302_2b7c5c82e6df4354b3030c7cd66398c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cad664b32c740599c559bfef1fdb2b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_98b8e68f9a124837b2e32dd7f6625552.pdf
    • https://static.usrfiles.com/ugd/3649d2_9f83df6681c043d3962a9543b7ca4f3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f47ab693e40c4d2d8411d679fbc148b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d08ac3d725a4921b691155fbd84b27f.pdf
    • https://static.usrfiles.com/ugd/66c878_16e297d47fd04083b3a5ebbd55ba237b.pdf
    • https://static.usrfiles.com/ugd/628a76_e579d152e88745a7a43553c63d2d73df.pdf
    • https://static.usrfiles.com/ugd/895bef_bed89f3528a34d94b76fb622bc18735b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063cc.bin
567a8fe01cc559581fadb7b7addf164753ac23f07e3154af93408e95a340796e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 5652 bytes
font_01_sfnt_off00007737.bin
dd5640d785ca4880ba7facbd800c0b3e0ede0b6d39675cf1e899224ffb417a9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7737 11820 bytes
font_02_sfnt_off00009d29.bin
754b3d3f5c129e2afd6e3c41de8afed62b9a844d864d2d44ddb3dd614ea90ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D29 18988 bytes

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