Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0999e14c1527bd…

MALICIOUS

PDF

38.2 KB Created: 2020-08-29 09:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f616fe57c4d850f40775cb3475eb9418 SHA-1: a9046d09785583eceee49e4e37be85d4bdd21673 SHA-256: fe0999e14c1527bd0937a6936d89c5b1ddee364eae25e4db8ff65791510f0774
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains references to a 'cleric spell sheet 5e' and multiple URLs, suggesting a social engineering pretext. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent to drive traffic to 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=cleric+spell+sheet+5e In PDF document text
    • https://static.usrfiles.com/ugd/b8c837_70980363a45a49c8a5c879a0d326a6ca.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_17312a22054b406fa5f23c80b24b4e05.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f27b1b26760645159a8becefc4c798b6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ef21ab562a21423da427b2b5f7edfb67.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7802/5370/files/fegeriwalosodarewedovaloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/basic_russian_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/kixaneretizozuvu.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a230fa2142044e48af3935b18ed18634.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_912569e4c4bb43e8b098a71aeca5d8d9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6109d0da593947988d5a3197125eb307.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_de81def0044f4711a94fb8dd501c1da2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_32307e46f22b4d13a12dade640d34f83.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000580f.bin
a585b920fc792944683af48b40254c00f71411d63b0be681e93b4ede76e26315		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580F 4840 bytes
font_01_sfnt_off0000687f.bin
c8a8a7df8b7c56f74043023f84d568a4429d88964743b7d6ea469f8d79a843cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687F 10552 bytes

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