Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe99b1dff4c0a977…

MALICIOUS

PDF

98.6 KB Created: 2020-08-29 18:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c207937f00cddd86e35752f7e962aec3 SHA-1: 4ad078daf991166a2d7b63a0930edb7017bfd69a SHA-256: fe99b1dff4c0a977661162bdca3491d1b0962376cbc1dc4ae191987ba96358ec
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.com'. This URL is presented within the document body as a 'Geordie shore season 12 episode guide', indicating a social engineering lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector. The ML classifier also flagged this PDF with high confidence.

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.com/wix?keyword=geordie+shore+season+12+episode+guide
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/aium_fetal_echocardiography_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/lasibapavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9892/3427/files/95545705185.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/21621457864.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/gugitoparobapapozad.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/42273017375.pdf
    • https://static.usrfiles.com/ugd/e2b09b_41916c78b39945a1a8c62705e825d3f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f998caf58f444d5c9ba04198824a294b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3fef2bdc9964125807655ed9b5e839e.pdf
    • https://static.usrfiles.com/ugd/b8c837_956b4bcb422545049caddb2fe0b7163f.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/24993630801.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/57890027452.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_off0001484d.bin
4c795d71d3252596791a76a1b700045fc44596efc1d6c716e7d5bc75313dafc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1484D 5404 bytes
font_01_sfnt_off00015ab0.bin
9f20ef076dfcca03c13ffeb77c6e94b50b4376d15b7fdf7791d07c090bf5d245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15AB0 9956 bytes

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