Malicious PDF — malware analysis report

Static analysis result for SHA-256 227a275aea6a1e23…

MALICIOUS

PDF

80.3 KB Created: 2021-06-14 04:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7e78c50090e26ea9d6c2d6107aed9f43 SHA-1: 550e22990dc91a067a30633aea2734114b149841 SHA-256: 227a275aea6a1e23980c18e24d719c58cf523ea3f834e6853217b957c116316a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8129

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crewmak.ru/pbw?utm_term=hum+apke+hai+kon+full+hd+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406776/normal_601c5e60e48f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495707/normal_603e8f6362ade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422148/normal_5fc5ef544784c.pdfIn PDF document text
    • https://wixapikolomuv.weebly.com/uploads/1/3/4/7/134746431/3e81bc322ba.pdfIn PDF document text
    • https://ledijomunekivi.weebly.com/uploads/1/3/4/5/134584754/9d9d6b024.pdfIn PDF document text
    • https://konevumi.weebly.com/uploads/1/3/4/3/134399330/jufelanijutifi.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4467007/normal_60b106ebf37f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445890/normal_5fd6290ae6481.pdfIn PDF document text
    • https://wanalupegekiful.weebly.com/uploads/1/3/4/8/134879682/pukijetog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palejemevat.pbworks.com/w/file/fetch/144587460/mefir.pdfIn PDF document text
    • http://risuxujuvu.pbworks.com/w/file/fetch/144517641/stihl_009_l_user_manual.pdfIn PDF document text
    • http://gufabewa.pbworks.com/w/file/fetch/144457062/9363184438.pdfIn PDF document text
    • http://fifafar.pbworks.com/w/file/fetch/144983058/plus_followers_4_red_apk_download.pdfIn PDF document text
    • http://jeselivid.pbworks.com/w/file/fetch/144573393/57714549654.pdfIn PDF document text
    • http://lokiboz.pbworks.com/w/file/fetch/144636480/mozajefu.pdfIn PDF document text
    • http://tosixuze.pbworks.com/w/file/fetch/145197723/dixujojajizadudipiluf.pdfIn PDF document text
    • http://lalakabazu.pbworks.com/w/file/fetch/144879306/easy_gta_money_glitch.pdfIn PDF document text
    • http://gomedaj.pbworks.com/f/4086658294.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12781 5092 bytes
SHA-256: 6178564345011597a6b851d174b8bada7689e4d422baf72561fcc3d34bef132d