Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcbf6f4b6862c626…

MALICIOUS

PDF

50.2 KB Created: 2020-07-07 12:38:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c21714582938e6b2afe025859409b214 SHA-1: e5d295859d559ac0ef896c5a6a6a4a77dda61c4c SHA-256: fcbf6f4b6862c626b714a1e90bca1e377ac12e53770d91ada9d291feb14786c7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm designed to distribute malware or phish users. The primary malicious link identified is https://ttraff.com/wb?keyword=teste%20psicot%C3%A9cnico%20detran%20pdf%202018#teste+psicot%25C3%25A9cnico+detran+pdf+2018, which leads to further redirection. The document body, though partially corrupted, contains keywords related to driving tests, suggesting a lure to entice clicks.

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/wb?keyword=teste%20psicot%C3%A9cnico%20detran%20pdf%202018#teste+psicot%25C3%25A9cnico+detran+pdf+2018
    • http://files.kdhodges.com/uploads/1/3/2/7/132740321/5360778.pdf
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdf
    • http://files.heartlandjungians.org/uploads/1/3/0/7/130776841/ziniruper.pdf
    • http://files.striba.net/uploads/1/3/1/3/131380413/9297027.pdf
    • http://files.lindalgraham.com/uploads/1/3/1/4/131455283/7d86161771d526.pdf
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdf
    • https://feramobelam.files.wordpress.com/2020/06/82713957353.pdf
    • https://gefanopo.files.wordpress.com/2020/06/57369317049.pdf
    • https://nuralezunawo436861297.files.wordpress.com/2020/06/72937159134.pdf
    • https://lobukekitu.files.wordpress.com/2020/07/33386951844.pdf
    • https://zasajeloso685135112.files.wordpress.com/2020/06/bitag.pdf
    • https://nuragil.files.wordpress.com/2020/07/ranezukam.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_off00008183.bin
969275b35479bdbe7e5bc8bb5942686ea84c70e08be90ba7da0ac8592e060732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8183 5516 bytes
font_01_sfnt_off00009402.bin
6356f9a9f8373847e09d19153306130cb0cecfab1d73ba60efd6e6191ca51883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9402 12484 bytes

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