Malicious PDF — malware analysis report

Static analysis result for SHA-256 d82f16724e7d2412…

MALICIOUS

PDF

33.0 KB Authoring application: PDFedit
MD5: e3c22c02f2c0c59923635c4fd2ee5045 SHA-1: 48ef8fda334ca5462696a9c232e64c2e044cd052 SHA-256: d82f16724e7d24124144309a564b461c20e1b64a8e6522a294f6ea25b987769a
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 http://islandyouth.tv/uploads/1/3/0/3/130323281/9526452.pdf
    • http://79piccadilly.com/uploads/1/3/0/6/130604595/kevero-dideto-nubunimeg-wivuxetomusek.pdf
    • http://lorenajp.com/uploads/1/3/0/3/130324044/rifujapuzebat.pdf
    • http://ladoniaherald.net/uploads/1/3/0/3/130323186/8475219.pdf
    • http://antique.ding2ding.com/uploads/1/3/0/7/130775734/8998361.pdf
    • http://divinenaturopathy.com/uploads/1/3/0/6/130639856/21203.pdf
    • http://uniquetouchofsparkle.com/uploads/1/3/0/6/130604720/mokejid.pdf
    • http://www.lakefineart.com/uploads/1/3/0/7/130775156/nobeb_kenavolulatizon_sisuxopagu.pdf
    • http://pathblazer.org/uploads/1/3/0/2/130288883/aed149837220.pdf
    • http://septiccleaningsalem.com/uploads/1/3/0/8/130814070/zosoreleg_gomovej_falumarufatos_detodudajeba.pdf
    • http://74-123-72-189.mgwnet.com/uploads/1/3/0/8/130874473/130874473.html#affidavit+format+for+birth+certificate+in+up
    • http://uniquetouchofsparkle.com/uploads/1/3/0/6/130604720/mokej

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a4b.bin
9c78d239f5b1984daa3400a6e6688ad741fca4af22b7f8f1eff0a1f0913ffe2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4B 8024 bytes

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