Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd60307daa612bb…

MALICIOUS

PDF

37.4 KB Created: 2020-09-14 02:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0323832ebb233144181af3c74ef5dccd SHA-1: f2063ca1afac146494f2e4b6e7267a7fb373a72e SHA-256: fcd60307daa612bbe50f2ec4ee1fc7a6d68b1f156734316e81d371f0a5f544be
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the target URL, suggesting the primary purpose is to redirect the user to malicious content. No scripts were extracted from this sample.

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.cc/wix?keyword=san+angelo+ymca+volleyball
    • http://files.seeyarealsoontravel.com/uploads/1/3/1/1/131164152/fitudovowokixozusax.pdf
    • http://files.kellyhowardglass.com/uploads/1/3/1/3/131379540/durureda.pdf
    • http://files.plpseniors.com/uploads/1/3/1/4/131437312/tiwisopiwatopi_ledasapat_fakovivivelopeg_risuwazebeda.pdf
    • http://files.alexandracr.com/uploads/1/3/1/3/131378921/degonapawe.pdf
    • http://files.marneapolo.com/uploads/1/3/1/3/131379014/7928644.pdf
    • https://static.usrfiles.com/ugd/b8c837_46a560164ed24750b3b965e884e7aac6.pdf
    • https://static.usrfiles.com/ugd/b8c837_63709972f7bb491fa0b25fc2089647cc.pdf
    • https://static.usrfiles.com/ugd/58a813_2a07b57c4a50437da649353bc3a8b243.pdf
    • https://static.usrfiles.com/ugd/158fb9_1cefd15cb7624c01aaf941bfbe8b2d2c.pdf
    • https://static.usrfiles.com/ugd/3f1130_0c14c82828aa46acba07d743427cfde1.pdf
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/78970020498.pdf
    • https://cdn.shopify.com/s/files/1/0436/1388/0483/files/descargar_gmetrix_templates.pdf
    • https://static.usrfiles.com/ugd/fa6f14_48ed3b7457864937a0e8358d72d4fdb4.pdf
    • https://static.usrfiles.com/ugd/bc0d1e_f022c55da0804e7b8a3b14e402f75c1d.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_off000053e6.bin
c2914c9c5b612129c5921a67b9e083fd3bab4085836a83c9ff3d37d48071dad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E6 5252 bytes
font_01_sfnt_off000065cd.bin
de2a0359349c8b5da1c6e89fa648caae8c8babea83fc726193161e1003f155f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CD 10316 bytes

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