Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19f65abfd857dcf…

MALICIOUS

PDF

39.1 KB Authoring application: pdf-parser
MD5: 5a864ec5e51cd993946022288ff75dca SHA-1: e44928b14e7ce8cb8e7954943ddbf9f44e7c7c29 SHA-256: c19f65abfd857dcf9a709c4cfa1c007f7a7ada1fedc2dfd89ae52976602aca29
128 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous embedded URLs pointing to external PDF documents. This technique is commonly used to distribute phishing content or malware. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. While no scripts were extracted, the sheer volume of linked PDFs suggests a coordinated effort to lure users to potentially malicious sites.

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://zobegubitabid.weebly.com/uploads/1/3/0/2/130289204/6480080.pdf
    • http://alyssacoughenour.com/uploads/1/3/0/5/130544625/vabeg-debadawizogix.pdf
    • http://pampanga-properties.com/uploads/1/3/0/5/130543488/6827321.pdf
    • http://milongacambalache.com/uploads/1/3/0/2/130272361/tibudaburikafe.pdf
    • http://mnhomeinteriors.com/uploads/1/3/0/5/130543653/6d172d2773.pdf
    • http://silag.zagruzka7km.com/uploads/2020/01/27/c8ab2d44fe1.pdf
    • http://thelohbros.com/uploads/1/3/0/3/130313215/ketutesoteku-fumonapenubaxi-zonigozomuposu-zefubi.pdf
    • http://mineralcapital.net/uploads/1/3/0/4/130488370/wuzad.pdf
    • http://plumluvfoods.com/uploads/1/3/0/4/130435546/24b4d65f.pdf
    • http://missinglinkbrewing.net/uploads/1/3/0/5/130588847/9583169.pdf
    • http://trestlestop.com/uploads/1/3/0/5/130588701/wumagojupezom.pdf
    • http://aakmechanical.net/uploads/1/3/0/5/130543538/jukid.pdf
    • http://aarstudiomasters.com/uploads/1/3/0/2/130274301/729242abb027f43.pdf
    • http://malekwilliams.com/uploads/1/3/0/2/130271035/zivavikikalefar.pdf
    • http://millsdigital.com/uploads/1/3/0/3/130379474/lakuvag.pdf
    • http://mtdorabuzz.com/uploads/1/3/0/2/130291527/130291527.html#angular++file+from+server+blob

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001435.bin
6f5a45b73d873e8d2fefc3ef33b80191689bfcbf5f98c089b4fc7a347dfff99b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1435 9464 bytes

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