Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bcd64253ded4ca…

MALICIOUS

PDF

57.2 KB Created: 2021-03-28 04:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60ad2542cde6cc5a107360a4d5984e32 SHA-1: 1b07abfb16d1e4ed02c9798b1770306c02b624c5 SHA-256: 62bcd64253ded4cad22d2a4932a1719a160968029315fde55b024c76b5f814a5
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only document designed as a lure, containing a clickable action that directs to an external URL. This is further supported by heuristics indicating a link farm and a high ML classification score for maliciousness. The presence of numerous external links suggests an attempt to distribute malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9022

Heuristics 5

  • 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.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 57 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://dugedepap.ru/award?keyword=effective+interpersonal+communication+skills+pdf
    • https://sipovabamekejo.weebly.com/uploads/1/3/5/3/135391609/rerage_moxosajix_dakewodap_pazatu.pdf
    • http://lirinevewafa.mypressonline.com/what_is_the_message_of_christmas_carol.pdf
    • http://volalagokiva.sportsontheweb.net/annotate_ipad_evernote.pdf
    • https://goreduve.weebly.com/uploads/1/3/2/7/132740848/f959fcf5.pdf
    • http://tejowigasinafu.getenjoyment.net/wexafojanimodin.pdf
    • http://gofadivus.mygamesonline.org/lolofimuw.pdf
    • http://rekipeva.iblogger.org/kezovefozuraxewejezo.pdf
    • https://nokemodikobo.weebly.com/uploads/1/3/4/3/134308311/6694441.pdf
    • https://sepefawepuvikex.weebly.com/uploads/1/3/5/3/135384525/nezimegiwajeb-jigoxojunixu.pdf
    • https://goguribepolim.weebly.com/uploads/1/3/0/7/130739596/tonemadigoforejube.pdf
    • https://s3.amazonaws.com/sukedil/brs_training_answers.pdf
    • https://s3.amazonaws.com/toguvaju/income_expenses_template_free.pdf
    • https://s3.amazonaws.com/lakujusitejojet/sat_books_free.pdf
    • https://s3.amazonaws.com/zubata/baruvavemuvifoxomokutam.pdf
    • https://s3.amazonaws.com/luramamelolem/vuzetebemezogesirenu.pdf
    • http://gonuvatujuj.epizy.com/jisinowurutipodivexuf.pdf

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