Malicious PDF — malware analysis report

Static analysis result for SHA-256 820fcacb4bbef724…

MALICIOUS

PDF

38.7 KB Authoring application: ImageMagick First seen: 2020-09-07
MD5: 5737b08e6ce1ab71705d0f6253c63fa9 SHA-1: dcf60b0cb3453286437e2f7cc1230d348680310d SHA-256: 820fcacb4bbef724302723be3d78b625bfcea9e24f8ced4f428b909057a4d03f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, many of which point to other PDF files, suggesting a link farm for SEO or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 http://gejil.denta-s.ru/uploads/2020/01/29/a12925.pdf In PDF document text
    • https://genitotofifig.weebly.com/uploads/1/3/0/2/130288594/woguxopukigewonale.pdfIn PDF document text
    • http://warur.pokupka-super10.ru/uploads/2020/01/27/299050.pdfIn PDF document text
    • https://tamufofaxedosul.weebly.com/uploads/1/3/0/4/130483537/wixuvadakagonogu.pdfIn PDF document text
    • http://gidolunat.1medvrn.ru/uploads/2020/01/28/84c5b.pdfIn PDF document text
    • http://lifestyleshop.nl/uploads/1/3/0/6/130621548/4511113.pdfIn PDF document text
    • http://nujalikuju.shopdochoi.tech/uploads/2020/01/27/2346121.pdfIn PDF document text
    • https://zoxavabagabop.weebly.com/uploads/1/3/0/5/130551258/8192838.pdfIn PDF document text
    • http://fuf.housemarkt.ru/uploads/2020/01/27/kululav-sajigiregaf-kagimuriku.pdfIn PDF document text
    • http://rol30.ru/uploads/2020/01/27/sudexovaxijiri.pdfIn PDF document text
    • http://insightin2music.com/uploads/1/3/0/2/130289173/130289173.html#tere+chehre+mein+woh+jaadu+hai+downloadIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232 7716 bytes
SHA-256: 28f5280de642147a692e526553164e4f883f88ee8c07934f4e256bb40f6dc913
font_01_sfnt_off00005052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5052 7972 bytes
SHA-256: 256e098a965ba04144e6a6aad610db4c97dbab4c21d16dadc8ce0e3a72e13680

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