Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b3375097b27816d…

MALICIOUS

PDF

61.5 KB Created: 2020-08-30 13:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20ec45a98b41a97b8a7f72a36f9545bc SHA-1: f04d985d0a59ca6c1f3ee668e7c6da1006990d09 SHA-256: 1b3375097b27816d3366d38cb89d58a55cadeaaf498c337a2195978162501727
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for a 'Final Fantasy 7 strategy guide'. The link directs to 'ttraff.com', which is flagged as malicious. The document also exhibits characteristics of a PDF link farm, suggesting it's part of a broader SEO manipulation or phishing campaign.

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=final+fantasy+7+strategy+guide+pdf+download
    • https://static.usrfiles.com/ugd/b8c837_8eb3c54016d04d24ab1ab29580d5a40b.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_4ad1e38dcd8b4c21b46a6c8503943876.pdf
    • https://static.usrfiles.com/ugd/b8c837_036edfe4fecf43169e19388be727cec1.pdf
    • https://static.usrfiles.com/ugd/34e21e_457e3b9a24004585aa953d4086d3fee6.pdf
    • https://static.usrfiles.com/ugd/9dda13_269fcec9c0974271a778a7cce67d162d.pdf
    • https://static.usrfiles.com/ugd/5438e3_ebc539a6dcff49e3a6106fc40859dfa1.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b28038f6e324f08ac9bb13e15575be2.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa9ca426d15349f3a5bc093628f85eeb.pdf
    • https://static.usrfiles.com/ugd/fac845_3c8afea8c29c497f95ee9ec2707c1c34.pdf
    • https://static.usrfiles.com/ugd/67e251_19180e208e644d4c91b3830b6aa8c347.pdf
    • https://static.usrfiles.com/ugd/cac9e4_7bbb96bf81524e789f87405d57fd1c80.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_off0000b391.bin
e16f7e4586753212b79e5ae5ea62d5f8df6233adc6ee71ef24973de6e324b135		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB391 5436 bytes
font_01_sfnt_off0000c63f.bin
a82113fc05d87cd8c7393b509ddfaa714066701f55187cc4ed302e3caa8e7326		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC63F 10228 bytes

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