Malicious PDF — malware analysis report

Static analysis result for SHA-256 51678f52d9e051be…

MALICIOUS

PDF

40.4 KB Authoring application: Serif PagePlus
MD5: d44ae8ef4dcef80c9b9f98c082d492de SHA-1: 9b9ad13d51b9d255cbe62351bba555a7ae9ae2fa SHA-256: 51678f52d9e051be80f60052f1dbfb910b3e0f23f33dcc636f1476a3182a2e7f
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. This is strongly suggestive of a phishing or malware distribution campaign. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment. No scripts were extracted from this sample.

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://atyogautopia.com/uploads/1/3/0/6/130603815/eeb5c2bd4.pdf
    • http://canaiandchai.com/uploads/1/3/0/4/130435577/muxapof.pdf
    • http://beckandbloom.com/uploads/1/3/0/2/130273623/29aa3ac6dd9c2b.pdf
    • http://cleaningbynikki.com/uploads/1/3/0/7/130740123/4131085.pdf
    • http://ohioawnings.com/uploads/1/3/0/7/130740627/pikijejinar-jusesazuze.pdf
    • http://hamiltoncitymobilehomepark.com/uploads/1/3/0/4/130436343/9086630.pdf
    • http://gailsuberbiellephotography.shop/uploads/1/3/0/7/130776599/kogatepabu_kumozanikisafam.pdf
    • http://360pro.be/uploads/1/3/0/4/130488861/mejoxug-dinanulos.pdf
    • http://newanday.host/uploads/1/3/0/6/130605435/juseruzodidor.pdf
    • http://travel-merit.com/uploads/1/3/0/8/130874175/fejutot.pdf
    • http://aahardwood.com/uploads/1/3/0/5/130588796/befafofodojibe_jewuruwukenube.pdf
    • http://bhpmedicalconsultants.com/uploads/1/3/0/2/130270892/2431632.pdf
    • http://closingout23.com/uploads/1/3/0/8/130874055/dagekizopeb-bazigo.pdf
    • http://www.westlandsleisurefacilities.com/uploads/1/3/0/8/130813650/lewaremidigul.pdf
    • http://surlepouceonline.com/uploads/1/3/0/2/130273801/2f5d397b3a44ff9.pdf
    • http://74-123-77-52.mgwnet.com/uploads/1/3/0/5/130544898/130544898.html#pan+card+form+pdf+2018+nsdl
    • http://hamiltoncitymobilehomepark.com/uploads/1/3/0/4/13043

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000371b.bin
b0a6a33381002d1c379ca931d660fe98df7a73518421c8b234b9dc16af60e95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x371B 2696 bytes
font_01_sfnt_off0000430f.bin
fab9d350eefe3e1b88263144e0dc86a16a53b886e780a87310cc1c9c0a5a0809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x430F 7840 bytes

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