Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3ae3a4e6b9bfa0…

MALICIOUS

PDF

47.8 KB Authoring application: QPDF
MD5: bba35cbd49b22fdf3a4a6322f4f7adb4 SHA-1: 1bdca4a0620e44358b144e8eb936bdc81649bc99 SHA-256: ae3ae3a4e6b9bfa04a7e911f63c95fb62b4be287c7357b65f3ac585d2585e9e9
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a common tactic for SEO poisoning and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to credit reports and includes numerous URLs, suggesting a lure to external malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://liwemutogamaw.weebly.com/uploads/1/3/0/3/130323127/6947253.pdf
    • http://fitnesscentrego.com/uploads/2020/01/28/ba3268.pdf
    • http://luxiwu.easygo.tech/uploads/2020/01/29/kipukik_xexozewabuwapa_nogama_nifoliginamem.pdf
    • http://nataliejimenez.com/uploads/1/3/0/5/130544694/ponuvonofeno-dimafeted-nekajavimoze-visobodutorew.pdf
    • https://kuwowubokiso.weebly.com/uploads/1/3/0/3/130312972/lovapadapuz-donodelumugofev-gotenuzofetigu-litemakogipaxu.pdf
    • http://mcmurrians.ca/uploads/1/3/0/2/130291908/bcd2c8c.pdf
    • http://master46.pro/uploads/2020/01/27/palegogefara.pdf
    • http://cserv.org/uploads/2020/01/28/rafunuladusawa.pdf
    • http://newperspectivemedical.com/uploads/1/3/0/5/130588984/130588984.html#derogatory+mark+removed+from+my+credit+report

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125d.bin
f9158e9dafc703078b7754046042f87102486a9c20c1315a5963faf7b6e3c942		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125D 8604 bytes
font_01_sfnt_off00006ce6.bin
2d83aa5dedd7098d1810ee27f23d33b333793f913e7239b5bccd94750f7d0497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 18476 bytes

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