Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6622b665716281…

MALICIOUS

PDF

34.5 KB Created: 2020-08-31 06:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 054883c67035eff9a101d83f066749a5 SHA-1: 01fdb1c380a25947be9a1b62570ff7067d10314b SHA-256: ff6622b6657162815f048954a40538cf5ad7f2c4dc492d08edb0512d6b6096ba
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body contains references to this URL and other PDF files, reinforcing the link farm and redirection attack pattern.

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=big+book+awakening+workbook
    • https://static.usrfiles.com/ugd/ba3095_5af2c35dd8d04cb59843ebafcb65fc9c.pdf
    • https://static.usrfiles.com/ugd/b11f6d_e8d8d841835d4965adacc12ebebc4d3c.pdf
    • https://static.usrfiles.com/ugd/ca32a8_c7afd7f124604f5eae3101514a7678b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_70fa9ad2f64145bc96ffa54f0b6d7146.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce9fe9742dad456c8961b1dc3fe4173d.pdf
    • https://static.usrfiles.com/ugd/1c90dc_19f823521efe4007882a586535a894bb.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9898/files/eclipse_mp3_player_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/gelodos.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/admin_supervisor_job_description.pdf
    • https://static.usrfiles.com/ugd/c7a620_9d1188fd00f84c4db1cb18f010f29cee.pdf
    • https://static.usrfiles.com/ugd/003b86_965e4b381f304afe8015a4324b465f91.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_off0000485e.bin
06e1a4adbf0c5004cdcfcd88989498eb99477dcdcb02c364902f674382a30aac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x485E 4988 bytes
font_01_sfnt_off00005984.bin
8e8e7bed0bf928bae07c43c47231ea80cddce536436570b802d1eb5da29f7122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5984 10524 bytes

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