Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ea05297a269a2e…

MALICIOUS

PDF

41.6 KB Created: 2021-01-14 05:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 69619f04190152f45550c5c97a1c5f20 SHA-1: 7a8316731fb88f8819b342d7571b1282e9512fcf SHA-256: 33ea05297a269a2ee94ce206d06839a30751e9b4a75917c43836533aa285b16e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier. It functions as a phishing lure, presenting a screenshot to conceal a malicious redirector link. The primary malicious URL identified is https://cctraff.ru/aws?utm_term=vsco+x+free+apk+latest+version, which likely leads to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7539

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://cctraff.ru/aws?utm_term=vsco+x+free+apk+latest+version In PDF document text
    • https://nuzolegan.weebly.com/uploads/1/3/4/5/134576582/kipelonatedof-panen-fukozofiwix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414848/normal_5fcd9e498fdef.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/viragaxinumimikag.pdfIn PDF document text
    • https://wadasazaba.weebly.com/uploads/1/3/3/9/133999184/4288236.pdfIn PDF document text
    • https://site-1176112.mozfiles.com/files/1176112/honda_pressure_washer_pump_oil_change.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450517/normal_5fcbdffd8c03a.pdfIn PDF document text
    • https://site-1196780.mozfiles.com/files/1196780/62937913045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459337/normal_5faa59cf58fed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f97e5a06583e.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/ef00f8273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f88123ad9c59.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/can_you_dye_carpet_on_the_floor.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/apache_kafka_server.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/fitemur.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/vofugol.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/whatsapp_for_nokia_asha_501_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/97901893410.pdfIn PDF document text