Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc254e47e7aec03…

MALICIOUS

PDF

60.8 KB Created: 2020-08-30 22:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee28dc1ae7c1cd97255f1d2cc4ff4b93 SHA-1: dcbace50dc0f952f7a9409ee29dfb677ee830810 SHA-256: 1cc254e47e7aec031d660f4932d5bb72a6695359b59d59374a6b44750d432ee0
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high ML score and the presence of a link farm pointing to known malicious redirector infrastructure. The embedded URL 'https://ttraff.com/wix?keyword=spyro+sunny+flight' is a primary indicator of malicious intent. The document's structure and content suggest it's designed to lure users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=spyro+sunny+flight
    • https://static.usrfiles.com/ugd/98857b_1c0b916c48f443fd88b1c865eab38ecf.pdf
    • https://static.usrfiles.com/ugd/b8c837_c951c817625f4eaab032288f870db976.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_16221201bd47459ea57138a9f3cd4e9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c86a6a768184e918a51f511b9c0e906.pdf
    • https://cdn.shopify.com/s/files/1/0432/8488/9758/files/migikuruvudesosifumet.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/sobomasipezitarojabe.pdf
    • https://static.usrfiles.com/ugd/b8c837_50bac93e13434f238ddd3c695c04caea.pdf
    • https://static.usrfiles.com/ugd/e33828_0221af075e114034bb2c98294a0846aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_da5cbadefd1b449c8b1031826a4d9e80.pdf
    • https://static.usrfiles.com/ugd/4c1554_810c5f27bb1f41f58d71da560f1ae080.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/anatomy_of_blood_brain_barrier.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/mastering_software_quality_assurance.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/school_things_worksheet.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_off0000b192.bin
598833f9705ddea3ccb4285b4c76660f34db5fe291d404d976ca992bb0622163
pdf-font-stream PDF embedded font (sfnt) at offset 0xB192 5160 bytes
font_01_sfnt_off0000c323.bin
58305ab169c6207dc3ad96de10072fe249ea9e13c0e7333e2697bbcdb6d88877
pdf-font-stream PDF embedded font (sfnt) at offset 0xC323 10324 bytes