Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a470a653f8c469…

MALICIOUS

PDF

36.2 KB Authoring application: Pdftk
MD5: b4f50aeeaa9b793fdb4de8f655c14024 SHA-1: 7d3ca636168f049586b2481c332f6df7e5db5f45 SHA-256: f1a470a653f8c469af6ebe4a1ea13a029afb6ed167e1e311bca2adbe9360ca2a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document body, though heavily corrupted, contains a list of URLs that appear to be part of this link farm. The primary attack pattern involves directing users to external resources, likely for phishing or malware distribution.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://lemopurewem.weebly.com/uploads/1/3/0/2/130291352/vomutemesipagugizer.pdf
    • http://gasuxokoz.frenemywebsite.ru/uploads/2020/01/28/02379d8f7a53e21.pdf
    • https://fiwokotiribow.weebly.com/uploads/1/3/0/6/130604522/5299745.pdf
    • http://allisongiessuebelhair.com/uploads/1/3/0/6/130621531/7668985.pdf
    • http://kowu.yaroslavl-med.ru/uploads/2020/01/28/kesowipinini_miretedimapa_pivemupuruzarub.pdf
    • http://atlshoebank.com/uploads/1/3/0/4/130436224/gigatolexofez-vujemevevisaso-wiwafogivuw-letudu.pdf
    • https://sosezoxeneluf.weebly.com/uploads/1/3/0/4/130475996/rutokiretudiju.pdf
    • http://dimofol.pay-pass.pro/uploads/2020/01/28/6451790.pdf
    • https://subazekuru.weebly.com/uploads/1/3/0/4/130476148/xojagubopowubi_megimoxajezabow_baremodunepox.pdf
    • http://metalslitter.com/uploads/1/3/0/6/130620858/3932795.pdf
    • https://mogigorefuxi.weebly.com/uploads/1/3/0/2/130271179/6284b91482d8ff3.pdf
    • http://need4relief.com/uploads/1/3/0/4/130479123/130479123.html#acca+f2+revision+kit+pdf+2017

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001356.bin
de5374de1f6bf2f1e7a2f079225fc0be9b8fe20beb092b1cf5ad2318a75b9801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1356 8468 bytes

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