Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1ea80e081da20b…

MALICIOUS

PDF

36.0 KB Authoring application: Soda PDF
MD5: 35a24869ff3b24c3d401c5ea7382ab62 SHA-1: 0d612e71908275543c0910b0f78d29e8d9945439 SHA-256: 3e1ea80e081da20ba23b93b90bbe21ed3979980cecd4c9be0a42b2d15c325ced
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This suggests a link farm or SEO manipulation tactic, potentially used to distribute malicious content or improve search engine ranking for malicious sites. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://dallasairductcleaning.net/uploads/1/3/0/2/130272071/3f3f4f.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/2/130287835/forugobojumiwa.pdf
    • http://mbanerds.net/uploads/1/3/0/6/130639751/4231825.pdf
    • http://kpmhs.com/uploads/1/3/0/7/130738625/7fe34c9522c.pdf
    • http://ajdevitt.com/uploads/1/3/0/6/130604018/9de38ee2926e.pdf
    • http://duty.af/uploads/1/3/0/4/130476652/suwazu_rawuxe_fejud.pdf
    • http://nolav.com/uploads/1/3/0/7/130775258/gatelijipakupuv_pobowapa_korawekozagu.pdf
    • http://jonfreeland.net/uploads/1/3/0/2/130287878/19ed0ae6a.pdf
    • http://studentloandebtforums.com/uploads/1/3/0/4/130483632/930bc47525dc0.pdf
    • http://www.sacredsurrenderbirth.com/uploads/1/3/0/6/130639605/felumokageg_lijekefilu_gonukufa.pdf
    • http://ramonmaciamusica.com/uploads/1/3/0/4/130483576/9739155.pdf
    • http://monarteonline.com/uploads/1/3/0/2/130273843/429bdc54.pdf
    • http://clinicalcampus.com/uploads/1/3/0/2/130291922/80f73.pdf
    • http://nexuspointrecordings.net/uploads/1/3/0/5/130590384/fowat.pdf
    • http://nudevember.net/uploads/1/3/0/2/130274098/4372030.pdf
    • http://perfectlywrappedllc.com/uploads/1/3/0/5/130551330/labobomevevulam-binokimurevu-sazewe.pdf
    • http://nbtatco.com/uploads/1/3/0/5/130544230/vurera_mexexazazutefib_dejanavurumov.pdf
    • http://www.geobiologiabarcelona.es/uploads/1/3/0/6/130621422/130621422.html#excuse+letter+for+being+absent+in+school+due+to+flu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa0.bin
c8b50e390c672be026177ebdfb5162bb439eaa9dbee1db0c47d86793f9b8380e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA0 7984 bytes

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