Malicious PDF — malware analysis report

Static analysis result for SHA-256 78191c5d3d122516…

MALICIOUS

PDF

33.7 KB Authoring application: OpenOffice.org
MD5: 3360f0d7d00e5c0731d8c463824757c6 SHA-1: d10b8d4580dfc04b32df4ef5867f292ece777099 SHA-256: 78191c5d3d1225164ae0f21b52448b796d2b366dad0f551b942ba49d0e493f25
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass external link farm, with the primary URL pointing to a malicious PDF. This heuristic, combined with ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', strongly suggests a phishing or malware distribution campaign. The embedded URLs are likely used to redirect users to further malicious content.

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://dujetul.individ.me/uploads/2020/01/29/zeweludixenet-molixelofuv.pdf
    • http://newportsummerrentals.com/uploads/1/3/0/3/130323411/1604820.pdf
    • http://oakroaster.com/uploads/1/3/0/3/130323641/4f5c0de119.pdf
    • http://eddiebotha.com/uploads/1/3/0/4/130483924/nufigesa.pdf
    • http://suj.cashopros.com/uploads/2020/01/28/423755.pdf
    • https://bedegobibise.weebly.com/uploads/1/3/0/4/130483390/f4dbc9458a406.pdf
    • http://michaelyipfilms.net/uploads/1/3/0/2/130272428/5fdb1c41.pdf
    • http://magazz1.fun/uploads/2020/01/28/wusafenud_vusuvop_sasota.pdf
    • http://connectionsthruart.com/uploads/1/3/0/5/130589180/vakevu.pdf
    • http://suzanneandjustinforever.com/uploads/1/3/0/5/130550769/gutadaxatu.pdf
    • http://thehappygirlstore.com/uploads/1/3/0/6/130604202/130604202.html#parallel+perpendicular+and+intersecting+lines+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000127d.bin
e2d2c78dc3070910c641a5ef1a0b6d3bddb2af79f65d8cde623e2163d9645340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127D 8436 bytes

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