Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44990c248f3eb28…

MALICIOUS

PDF

29.5 KB Created: 2018-06-11 08:43:15 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 01709a2607b2028538c1433da88a4c7b SHA-1: 35bd740a89c9ef0d504f90840545365a5f8caf82 SHA-256: f44990c248f3eb287064fc94287f049d26be4a9eceba1d28300933a412f2743b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9525

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://uncpbisdegree.com/download3.php?q=zagato-car-designer.pdf PDF link annotation
    • http://uncpbisdegree.com/download4.php?q=zagato-car-designer.pdfIn PDF document text
    • http://www.carbodydesign.com/2014/03/interview-with-mustang-designer-kemal-curic/In PDF document text
    • http://www.carbodydesign.com/In PDF document text
    • http://news.diephotodesigner.de/In PDF document text
    • http://www.autocarbrands.com/car-brands-information-list/In PDF document text
    • https://www.carandclassic.co.uk/list/81/In PDF document text
    • http://uncpbisdegree.com/1/the-three-crowns-the-story-of-william-and-mary.pdfIn PDF document text
    • http://uncpbisdegree.com/1/uniserve-business-solution-inc.pdfIn PDF document text
    • http://uncpbisdegree.com/1/travel-takaful.pdfIn PDF document text
    • http://uncpbisdegree.com/1/two-battery-wiring-diagram-for-larson-cruiser.pdfIn PDF document text
    • http://uncpbisdegree.com/1/wordwise-chapter-17.pdfIn PDF document text
    • http://uncpbisdegree.com/1/what-is-corporate-dashboard-in-bobj.pdfIn PDF document text
    • http://uncpbisdegree.com/1/the-periodic-law-chapter-5.pdfIn PDF document text
    • http://uncpbisdegree.com/1/tiger-moms-is-tough-parenting-really-the-answer-2.pdfIn PDF document text
    • http://uncpbisdegree.com/1/the-shoes-of-the-fisherman-vatican-trilogy-book-1.pdfIn PDF document text
    • http://uncpbisdegree.com/1/wiring-diagram-ford-4-6l-voltage-regulator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://en.wikipedia.org/wiki/Alfa_Romeo_6CIn PDF document text
    • https://en.wikipedia.org/wiki/Lancia_FlaminiaIn PDF document text
    • http://www.thisismoney.co.uk/money/cars/article-3652817/Aston-Martin-build-500k-stunning-Vanquish-Zagato-99-sold.htmlIn PDF document text
    • http://www.thisismoney.co.uk/money/cars/article-3752667/Aston-Martin-reveals-Vanquish-Zagato-Volante.htmlIn PDF document text
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
    • https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
    • http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38E7 10472 bytes
SHA-256: d51a8a1697d19f2f3a3a4a1256a9d85a8e60bc366b91811c03b097c34f4f565d
font_01_sfnt_off00005a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A34 6960 bytes
SHA-256: 7245a6e399d03273fe76fb6e045f8487c1b067fed9297e08be6ae6b0f3b2363f

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