Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc9b66ff141f307…

MALICIOUS

PDF

39.2 KB Created: 2020-08-30 18:13:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaf575951187a5f12ada68792f9d8862 SHA-1: 6ecd02222d2c8260f74d55551e062cb534ab324f SHA-256: cfc9b66ff141f3072b43e662ab0ab8636f7c3338cdb0b37d6b7312944d0e9caa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though partially corrupted, includes the same URL and a search query, suggesting a lure to trick users into clicking the link. The PDF also contains a mass external link farm, with many links hosted on 'cdn.shopify.com', indicating a potential SEO poisoning or link farm tactic to distribute malicious content. No scripts were extracted from this sample.

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.cc/wix?keyword=neon+elementi+nerelerde+kullan%25C4%25B1l%25C4%25B1r
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/201648558.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/outlook_address_book_to_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0437/0094/5048/files/fusiledelekokubujugagoja.pdf
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/files/sinteze_istorie_academia_de_politie_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/xonapesadibuwurixediz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3600/6817/files/sagetixirunofokamel.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/airman_certification_standards_private_pilot_airplane.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1713/files/mukedosarukukefolelufatut.pdf
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/entidades_territoriales_de_colombia.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/32341076353.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/ruronasukurobusubefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/upload_video_to_discord.pdf
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/linkedin_profile_image.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_off00005b0c.bin
f4007ae8f8a8a4d177ff2e4fc2b976fc89f7c2082d4754d9baf74b64e11fe861		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0C 4856 bytes
font_01_sfnt_off00006b78.bin
3b390c37f49418a6366416906a3a2ffb1069d9cbf4c1ad20b23d6ef69236aba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B78 10880 bytes

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