Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70a8b3efd79e03a…

MALICIOUS

PDF

51.2 KB Authoring application: Soda PDF
MD5: 31e3598ddeb6462118678dbfb40d9c9e SHA-1: 5def7daeb0eb905669387acf291aa5f6dcbcd0d4 SHA-256: e70a8b3efd79e03a22aefad210580a8757931f9f4761279c823edd1eaf6175e3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary attack pattern involves directing users to a vast array of external PDF files hosted on various domains, likely for SEO manipulation or to serve as a distribution point for further malicious payloads.

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 https://rinorapaxu.weebly.com/uploads/1/3/0/5/130552073/7e8a2be0.pdf
    • http://youngatartmn.com/uploads/1/3/0/4/130483478/jufunu_jekez_kofawizog_rupezotirowid.pdf
    • http://agm70.icu/uploads/2020/01/28/5021429.pdf
    • http://lkinvestigativeservices.net/uploads/1/3/0/4/130476368/8467537.pdf
    • http://americanmusicnews.com/uploads/1/3/0/2/130289063/tudoneteziletufazoga.pdf
    • http://guvawe.baikaltouristic.com/uploads/2020/01/28/notipiba-kutafivon.pdf
    • http://niehusactuary.com/uploads/1/3/0/6/130604046/wijowawazakuga-vowumabaza-dolatunuz-bafanegodol.pdf
    • http://219garage.com/uploads/1/3/0/6/130621516/denotefuvomezu.pdf
    • http://mpcaa.net/uploads/1/3/0/2/130271099/251e3.pdf
    • http://senaguroj.ledy-boss.su/uploads/2020/01/28/2453678.pdf
    • http://msg-ec.com/uploads/1/3/0/2/130289503/tomubul.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/7/130740524/130740524.html#magazine+interview+article+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001069.bin
1affbf2bcd1d8b6767b3557123a0f9f51af3037d75fdbecf0d55dcfdb813c66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1069 10504 bytes

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