Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c399b0d6e2a29ef…

MALICIOUS

PDF

38.4 KB Created: 2020-09-15 17:48:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0d56d9bcc4dc1700a9fdd85da3b55b0 SHA-1: 4794e95bab30d1749d641d27e5fcce987eff23b9 SHA-256: 7c399b0d6e2a29ef2e828f875d5b0b9d08079e9193937e4fcc68c0ec53b58c35
92 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/pify?keyword=google+instant+streetview'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier also flagged this PDF as malicious with high confidence. The attack pattern is inferred to be a social engineering lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.club/pify?keyword=google+instant+streetview
    • http://files.imijwardrobe.com/uploads/1/3/0/7/130739850/nunuzigikukelij.pdf
    • http://xuxaj.alpacasofaledo.com/uploads/1/3/0/7/130776436/867bc332a.pdf
    • http://fokes.midatlanticbrassbandfestival.com/uploads/1/3/2/6/132683218/vixoneteb-losed-fofonok-pidogeli.pdf
    • https://static.usrfiles.com/ugd/1a94e8_a5cfe9f88a414622939b1917afbd5256.pdf
    • https://static.usrfiles.com/ugd/b8c837_12c70df8f6874c928cbe2bf06766e928.pdf
    • https://static.usrfiles.com/ugd/36f25b_172283de0ec64f419bae46eaba714a27.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/email_template_builder_software.pdf
    • https://cdn.shopify.com/s/files/1/0429/5449/0012/files/employment_certificate_format_for_us_visa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c6f.bin
b483bad5e4c1b62d1ec7e7d652540c649c741a3a567213327ec850b7cc38d086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6F 4824 bytes
font_01_sfnt_off00005cf6.bin
5d9ecf6d7c1c768c23a084d3f8997fbd60f27a08a58c90a64be0e620c4503790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF6 10120 bytes
font_02_sfnt_off00007f78.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F78 4324 bytes

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