Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9254fb532f9115d…

MALICIOUS

PDF

40.3 KB Created: 2020-09-05 11:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435a0b290dae87c81890ae58f317d2c1 SHA-1: 6f365109c912c280131568449c54e583063e5aed SHA-256: f9254fb532f9115d935a27f37d3d7c3da0a2d4864c7b6e22981881d51e962fad
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to PDF documents hosted on Shopify and other platforms, indicating a link farm. One prominent URL, https://ttraff.club/wix?keyword=firefox+esr+60.+2.+1, is flagged as a malicious redirector. The document body contains garbled text and metadata related to wkhtmltopdf, suggesting it was programmatically generated. The primary attack pattern appears to be SEO manipulation or the distribution of further malicious content through a network of linked PDFs.

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.club/wix?keyword=firefox+esr+60.+2.+1
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/dunuvugixukupijodefofimi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/alternative_energy_in_buildings.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/alumina_processing_properties_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0431/8009/7687/files/pride_scooter_parts.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5199/files/is_13_prime.pdf
    • https://static.usrfiles.com/ugd/48f461_760c6eb2e58e4b29a9bfa59649427176.pdf
    • https://static.usrfiles.com/ugd/aef5b7_922e16cd08554448af668c45b810d808.pdf
    • https://static.usrfiles.com/ugd/b58d21_468e46d83d4a4a66a52abf1f5a0a0427.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5254cda8ee940a693c157be1c2482af.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/madea_full_movie_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/30295502988.pdf
    • https://cdn.shopify.com/s/files/1/0438/0885/0081/files/72909075848.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_off0000559e.bin
489b96a1155a7cc2bbe538841282a200246204c44a13f71aba2214c42a71677f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559E 4656 bytes
font_01_sfnt_off00006589.bin
0618d22caaa9ae112f37c28ca443f64d23d720f15a4390a791a57c232b4ea77b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 9664 bytes
font_02_sfnt_off000086b7.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B7 4324 bytes

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