Malicious PDF — malware analysis report

Static analysis result for SHA-256 22569a8b1320d14c…

MALICIOUS

PDF

43.7 KB Authoring application: Serif PagePlus
MD5: a9abb101e3e48ea379b312801c273aef SHA-1: f3f628f1aa3cc0481632abf1d7db8e1109958215 SHA-256: 22569a8b1320d14cdd0186731535f53ced40a8855519a33b50aa73311b75252e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, 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 are the primary indicators of compromise, suggesting the document's purpose is to redirect users to potentially malicious content.

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 http://tateki.secludeddating.com/uploads/2020/01/28/kovolapimib.pdf
    • http://mypups4u.com/uploads/1/3/0/2/130271078/8cc2edff9.pdf
    • http://bevugubuxu.muzonik.ru/uploads/2020/01/28/bidepaxenodesit.pdf
    • http://commercialstoragebirminghamal.com/uploads/1/3/0/5/130588675/ad8303.pdf
    • http://goni.web-delo.icu/uploads/2020/01/28/zodigatomobivimokug.pdf
    • http://topikiathome.weebly.com/uploads/1/3/0/6/130640079/1258781.pdf
    • http://korumall.com/uploads/1/3/0/4/130435833/c1c6ab4fe3e2eb.pdf
    • http://ddscientific.net/uploads/1/3/0/2/130287936/a0ddc15527a.pdf
    • http://ogangii.com/uploads/1/3/0/5/130588567/1d72fa.pdf
    • http://artlessonsbypaula.com/uploads/1/3/0/4/130476519/2165046.pdf
    • http://nojogeso.dasdwqs.icu/uploads/2020/01/27/f8c108783.pdf
    • http://dpjutzi.com/uploads/1/3/0/5/130551670/fidafif-titadop-dowiwubanu.pdf
    • http://cherishedvessels.com/uploads/1/3/0/6/130604004/1c73565f94099.pdf
    • http://beingself-centered.com/uploads/1/3/0/6/130604428/130604428.html#beauty+and+the+beast+2017+ending+transformation

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000137f.bin
7c2b3dfde0373524fa7603f7567c1c0701f55350f02deab2c02e311ff681ec69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137F 8708 bytes
font_01_sfnt_off00006f37.bin
50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F37 2732 bytes

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