Malicious PDF — malware analysis report

Static analysis result for SHA-256 a520807c5dca4d66…

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 23:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbea7c37310ef7bcb6fc36611e692566 SHA-1: e96367f78978dbe480132f40dbb568fcb8394523 SHA-256: a520807c5dca4d66aa3c19b2e75e515732cff4aa9d2afcfcc9141bf085bf0c21
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=en+son+filmler+indir'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=en+son+filmler+indir
    • https://static.usrfiles.com/ugd/b8c837_cce7a4f23653497ebb1e0607be8b4cf1.pdf
    • https://static.usrfiles.com/ugd/cf14a4_475ae02547964bbebef8afe1995a2a0c.pdf
    • https://static.usrfiles.com/ugd/4b68be_ea4b1cddc8524bdab4c5f8aff1f590dd.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2111/files/eia_report_on_dam.pdf
    • https://cdn.shopify.com/s/files/1/0432/5788/8936/files/cookie_sheet_dimensions_in_inches.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/english_file_beginner_teacher_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/3301/0081/files/antenatal_diet_health_education.pdf
    • https://cdn.shopify.com/s/files/1/0440/7797/3654/files/osman_yaar_yoldacan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/filomifudazizo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/business_daily_newspaper_kenya_today.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/13871896910.pdf
    • https://cdn.shopify.com/s/files/1/0428/7224/2342/files/ariston_washer_dryer_combo_manual.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_off00006614.bin
e1af108ff38f429c629829903e5a73b1517f3b061b66f53b011a8739243c49c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 4800 bytes
font_01_sfnt_off00007649.bin
5b0116a61174f14129c787915e73ab1951046eef0a0d488cf4c7ede46bc4cd94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7649 11500 bytes

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