Malicious PDF — malware analysis report

Static analysis result for SHA-256 6193e136f3731477…

MALICIOUS

PDF

65.3 KB Authoring application: ImageMagick
MD5: ba9e56a1d946e198af8e4f81737cee13 SHA-1: 4df1486161d8144f41d40e8efd589bbd7d6d6e77 SHA-256: 6193e136f3731477923b6384faab7b41d4513cb0d1bac8653dc242a1110e8699
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to external PDF files, a technique often used in advance-fee scams or phishing campaigns to direct users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a fraudulent scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://drlyons.net/uploads/1/3/0/2/130289482/911844077738.pdf
    • http://nurseries.shop/uploads/1/3/0/5/130540240/vonas.pdf
    • http://amwna.org/uploads/1/3/0/5/130551746/23e10c915edf2.pdf
    • http://moodieshop.com/uploads/1/3/0/6/130639571/5e5f4edd70cdc5.pdf
    • http://my-bizco.com/uploads/1/3/0/4/130488223/dovizafemil_gazenadavejov_tetakarezup_vegetiximobeguw.pdf
    • http://zawidezitu.ladies.wine/uploads/2020/01/29/5e9dc07819.pdf
    • https://betonipuf.weebly.com/uploads/1/3/0/5/130551282/vajutokojobugabukasa.pdf
    • http://thesingbabysingshow.com/uploads/1/3/0/6/130604581/130604581.html#madhava+mathematics+competition+2019+answer+key
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012aa.bin
13439327d0d67937c0af4f7b9210c4b7a7429f971d3490cf799f09726a7a22e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AA 9212 bytes
font_01_sfnt_off0000a851.bin
140912e5d921085f42c3365bdd9c986117ed50085dbbb3a4eb670d7db52cf95b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA851 7992 bytes
font_02_sfnt_off0000bce4.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE4 1708 bytes
font_03_sfnt_off0000c4dc.bin
985cbd9ba5b629f1b749d04d852c0eecb5d8ad374186a1044a60da9476420dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4DC 2788 bytes

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