Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfbca58c8a12d1c…

MALICIOUS

PDF

48.5 KB Authoring application: Poppler-utils
MD5: 619addbf36ec3b5569290c78fa187d0e SHA-1: 0b9f8a1b5d6aeb3c6c9ffe87b7cfa003aa420a67 SHA-256: fbfbca58c8a12d1c419fc029812056b2cc07692b90605576bc4309537217019f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, mentions 'Authority letter format for icegate registration' and includes numerous URLs pointing to PDF files hosted on various domains. This suggests a phishing or malware distribution campaign where the PDF acts as a lure to download further malicious content.

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://aeem.com.au/uploads/1/3/0/4/130483447/pugalesuxusano.pdf
    • http://forten.pw/uploads/2020/01/28/4064e2f9458847b.pdf
    • http://merakiskincare.net/uploads/1/3/0/4/130436272/cf1f3cd43d78a.pdf
    • http://athleticsnorth.net/uploads/1/3/0/2/130272387/kozasitife-nivunurasegixoj.pdf
    • http://serefonapi.zip-darom.ru/uploads/2020/01/28/593f5fa4d6163.pdf
    • http://confidence-camp.com/uploads/1/3/0/4/130488153/4407232.pdf
    • http://reachsports.net/uploads/1/3/0/3/130323959/femanurisakapel_rewipadowuwup_pagerekiz.pdf
    • http://realedchat.com/uploads/1/3/0/6/130604525/bewoz_revujusolatog.pdf
    • https://witasumezuwodon.weebly.com/uploads/1/3/0/2/130287837/rutimuzamites.pdf
    • http://kapustadesign.com/uploads/1/3/0/5/130543148/lujivujepawe_gewis.pdf
    • http://milledgevillepd.org/uploads/1/3/0/5/130588551/130588551.html#authority+letter+format+for+icegate+registration

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001525.bin
669b1ca558b435a00f4bebb0ac4425b3bff30ffffa7f7ad85a6c26f01698ec50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1525 8244 bytes

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