Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c5863a9b9cef0f…

MALICIOUS

PDF

118.8 KB Created: 2020-08-31 02:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0388e5051e56703e1ae70446b0aaae54 SHA-1: a1dc36adbd212f1991733005ec86b5232ad47e2b SHA-256: 24c5863a9b9cef0fa9c85ca1c7592a921a2159d011ab275e61bb5a01477eb112
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a 'clarity user guide'. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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=clarity+user+guide
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/55927352529.pdf
    • https://cdn.shopify.com/s/files/1/0464/3084/7128/files/loctite_271_sds_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/flv_downloader_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0428/1987/9068/files/zikit.pdf
    • https://static.usrfiles.com/ugd/d54300_aab5d00b3ad04656bcf18280ce666073.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/minutes_agenda_template_word.pdf
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/anahtar_kelimelerle_eitim_bilimleri.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/vukuwapilinomarev.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/pufusoxadu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2199/7979/files/15564130045.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/26801337696.pdf
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/vozivabo.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_off0001965e.bin
8a1c1acfe704327d12731fbece1ade6dcbb204ac5c5b39af890b04320a0302ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1965E 5000 bytes
font_01_sfnt_off0001a773.bin
2c6bffc829070286cd074275fd6669584f37686cbb47b15d092c6cd320c81677		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A773 11568 bytes

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