Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ac934f6a9063c9…

MALICIOUS

PDF

64.2 KB Created: 2021-10-02 11:59:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 52f019cd7a4653437c258a6a1bcbad0d SHA-1: d11b3ef760a7b8ed70f6c63fa4edb7a616d31c78 SHA-256: c0ac934f6a9063c96e6a10c6edfc028627c2f9b526113e0cc9529702e4b5a18c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated maliciousness. It contains numerous external URIs and is described as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6298

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://catamma.ru/uplcv?utm_term=state+and+explain+work+energy+principle PDF link annotation
    • http://gzlmjx.com/data/home/bxu2343160066/htdocs/uploadfile/files/50422482610.pdfIn PDF document text
    • http://fohow77.ru/upload/file/35724452983.pdfIn PDF document text
    • https://alaskaproauto.net/nbloom/fckuploads/file/98486863668.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/soxoguzizu.pdfIn PDF document text
    • http://kco.su/userfiles/file/mogevikijiwexiku.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/fidev.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/56397554990.pdfIn PDF document text
    • https://astoraccessories.com/uploads/ckfinder/files/direl.pdfIn PDF document text
    • https://kede.org/userfiles/file/88080150835.pdfIn PDF document text
    • https://hanyauntuktesting.com/contents/files/bebezesabutenikifasel.pdfIn PDF document text
    • https://successalpha.team/upload/files/13107787524.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/699a73232d82a627bf27b6f4ab21dc61/pezuwusuxesarun.pdfIn PDF document text
    • http://pc580.cn/upload_fck/file/2021-10-2/20211002074750921286.pdfIn PDF document text
    • http://stagegator.scorchmark.com/stagegator/ckfinder/userfiles/files/64340172784.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/gesadesola.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/59515319384.pdfIn PDF document text
    • https://ywint.com/ckfinder/userfiles/files/1632219274.pdfIn PDF document text
    • https://greenfins-thailand.org/uploads/file/23481542797.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210927_1A3F4B291394AA8D.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16136c1c31726d---70253701445.pdfIn PDF document text
    • http://it-hair.com/userfiles/52458446685.pdfIn PDF document text
    • http://gruaszarate.com/ckfinder/userfiles/files/82089501903.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFC3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DA 10988 bytes
SHA-256: 87c6c1e155365425e596a71dae657daafadf90c9450da0df051cabb1f24c3103

Open this report in the interactive analyzer, or submit your own file for analysis.