Malicious PDF — malware analysis report

Static analysis result for SHA-256 d635a775350178ad…

MALICIOUS

PDF

42.4 KB Created: 2020-09-01 11:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91bda40da91d00291c76361f7168d99e SHA-1: f71d55d33fdfc0f4e647ccd0bb3a9426d9fc2491 SHA-256: d635a775350178ad4b70352d719609f7029b1b741728cb264875fd5fdd23170e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily corrupted, contains text suggesting a lure related to 'Railroad Tycoon 3 demo'. The heuristic firings confirm the presence of a malicious redirector link and a link farm, indicating a social engineering attempt to drive traffic to malicious sites. The primary IOC is the malicious redirector URL.

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.link/wix?keyword=railroad+tycoon+3++demo
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/28855358839.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/php_extract_number_from_end_of_string.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/pazorozuvegisebufemimuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/75571731510.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/depafetaxumakurasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9773/5836/files/42453525749.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/kavavudewamamuju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/77777549528.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/foliduges.pdf
    • https://static.usrfiles.com/ugd/b7306e_1ec5c632ce1546a9b5cdda36985ddc36.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2f9d3322edc4e20980356a1bc218064.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/65062565933.pdf
    • https://cdn.shopify.com/s/files/1/0440/0729/3086/files/flight_radar_app_free_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/12478425532.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_off0000667e.bin
3cba1fd6c5e3806b8e354fbceb7d3ad1bc5a64d2770b2bc1e012c7ce7434329b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 5180 bytes
font_01_sfnt_off0000781a.bin
c6b2692e3c6d29ecedec300624337be0e80d52d734ed7aea3f29591b38a86f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781A 10980 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.