Malicious PDF — malware analysis report

Static analysis result for SHA-256 030b0850ce970ad1…

MALICIOUS

PDF

34.9 KB Authoring application: PDF Studio
MD5: cf739bb751c9065016f84b83472f47db SHA-1: b64e0b63db35f968d70f2b147099d76e6c8dac3d SHA-256: 030b0850ce970ad1752a9d2aa02792e4f8749dc28f08f800b8affa7ae645ca06
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a PDF_SEO_LINK_FARM heuristic. This suggests the document is designed to manipulate search engine results or redirect users to potentially malicious content hosted on numerous domains. The presence of a callback lure heuristic also indicates a phishing or scam attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://www.afoothillacu.com/uploads/1/3/0/5/130550967/1947576.pdf
    • http://turkishnetwork.org/uploads/1/3/0/6/130603673/6002238.pdf
    • http://mariawilhelmina.com/uploads/1/3/0/2/130270895/cf3d309189a11b3.pdf
    • http://newtestamentchristianschool.com/uploads/1/3/0/8/130874509/luzugu.pdf
    • http://gameboxrental.com/uploads/1/3/0/7/130739791/susexesutemuj.pdf
    • http://auctioncincy.com/uploads/1/3/0/7/130739164/7488032.pdf
    • http://www.movinion.com/uploads/1/3/0/7/130775441/lazimunubeki.pdf
    • http://lataco.net/uploads/1/3/0/4/130436125/b316dac28.pdf
    • http://answersoperation.org/uploads/1/3/0/6/130621143/rotomajaw-nisipivan-jetidaz.pdf
    • http://nusgss.org/uploads/1/3/0/5/130588842/c5fdc38a9d.pdf
    • http://dalstonstyle.com/uploads/1/3/0/7/130776667/vaviruxokumevi.pdf
    • http://pmuench.patrickmuench.ch/uploads/1/3/0/2/130291649/9553c.pdf
    • http://xx2tbq.brdge.org/uploads/1/3/0/8/130873864/130873864.html#union+bank+of+india+courier+tracking
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001c98.bin
750c92fa1db5810c6de6b1040e9c0837d38486580b44de1cde3f2eb8b8040d63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C98 6664 bytes
font_01_sfnt_off00002ff0.bin
a424ffc7022dd4bb6693574ef8e84f3576c20d1737e09cd8d078b3d2e84c1d85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF0 7988 bytes

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