Malicious PDF — malware analysis report

Static analysis result for SHA-256 a761d6f123c7759b…

MALICIOUS

PDF

50.5 KB Authoring application: GIMP
MD5: 35938236318775ea6b519f47223918b4 SHA-1: 15845fdf66bf3132df972b1617740a681d0c8f85 SHA-256: a761d6f123c7759bc103585bc3cf88336266d6717e8b275377f5a70b6e69bce3
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique commonly used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs likely lead to further malicious content or phishing sites.

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://musicinmyneighborhood.com/uploads/1/3/0/2/130289229/solibunivoj-peforim.pdf
    • http://singersandactorsworkshop.com/uploads/1/3/0/6/130620614/deruzi_mekakim_likepadisemawaw_babegoji.pdf
    • http://swagastro.weebly.com/uploads/1/3/0/2/130292143/a919b195afa24.pdf
    • http://wyomingprideboxingclub.org/uploads/1/3/0/3/130313588/73935e1f98b4.pdf
    • http://alliedmedstaffing.com/uploads/1/3/0/4/130436095/271829.pdf
    • http://carterskennel.com/uploads/1/3/0/5/130551463/7975653.pdf
    • http://tierisch-tragbar.de/uploads/1/3/0/6/130604810/giwijas.pdf
    • http://nebraskatowshow.com/uploads/1/3/0/2/130271042/651eb4abee.pdf
    • http://adperformancehorses.com/uploads/1/3/0/4/130483238/daxugopakog-bijakizavip-nevorilalaga.pdf
    • http://sophsphotos.com/uploads/1/3/0/2/130287462/7f72f.pdf
    • http://stonelakecounseling.com/uploads/1/3/0/2/130287503/zojubopix.pdf
    • http://allergy.mediutopia.com/uploads/1/3/0/7/130739777/130739777.html#atletismo+paralimpico+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001397.bin
a44911326fece40ee0e3eb18fa92506c46b68b3bd3363411e1bbcffca690df36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1397 9684 bytes
font_01_sfnt_off00007674.bin
480437884ac0b6d9fcc812d03c56ed28f568666de2b30b44bd42ac9599fc2464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7674 2680 bytes
font_02_sfnt_off00007f55.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 16036 bytes

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