Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c61728ca956cf1a…

MALICIOUS

PDF

50.6 KB Created: 2021-04-07 12:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eaa05ce6b9706b53febcb7321c627de2 SHA-1: b670932611ad331b182a5c42bbc46c1b4a991b83 SHA-256: 7c61728ca956cf1af4561852426e0f8a53b9250a08242854711154a79c3092fb
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns, containing numerous external links. One prominent link, 'https://fokemale.ru/aws?utm_term=2+step+inequality+worksheet+pdf', is likely the primary malicious destination. The ClamAV detection and ML classifier further support its malicious nature, suggesting it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6386

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 50 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://fokemale.ru/aws?utm_term=2+step+inequality+worksheet+pdf
    • http://wozovumorawoka.sportsontheweb.net/23942287409.pdf
    • https://cdn.sqhk.co/tonufipu/bQsQCjc/90395611803.pdf
    • https://cdn.sqhk.co/luxanimev/fgwakge/59133161365.pdf
    • https://cdn.sqhk.co/balekunu/MibjcOx/67419387922.pdf
    • https://wegenagozej.weebly.com/uploads/1/3/5/3/135394478/f491da45.pdf
    • https://digexuvin.weebly.com/uploads/1/3/2/8/132814990/bavana-wofot.pdf
    • https://cdn.sqhk.co/kuwusemob/kijchgo/visolonos.pdf
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/galagepefezuravakat.pdf
    • https://mavosawiki.weebly.com/uploads/1/3/1/1/131163846/f4429e.pdf
    • https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/vuridegi.pdf
    • https://s3.amazonaws.com/jazamerijekufol/career_of_evil_book_series.pdf
    • http://lewomunenuvi.myartsonline.com/pdf_download_adobe_acrobat_reader_9._1_free.pdf
    • https://s3.amazonaws.com/mexijegedakol/graco_snugride_30_stroller_frame.pdf
    • https://uploads.strikinglycdn.com/files/949eb0d7-db13-4dec-9a27-50f245f2e7e9/amoeba_sisters_introduction_to_cells_answer_key.pdf
    • https://s3.amazonaws.com/dogevazapiwediw/rogesoso.pdf
    • https://s3.amazonaws.com/ginutu/simple_leaflet_template_ks1.pdf
    • https://uploads.strikinglycdn.com/files/95eb7770-8b40-42b4-bd9a-cb06783a9fc5/stephen_king_books_by_year.pdf
    • https://s3.amazonaws.com/rupatojuko/pujotovanasipavimukotukij.pdf
    • https://uploads.strikinglycdn.com/files/5fe87254-9aa5-4a3f-a35e-21b6f5118005/45768903745.pdf
    • https://s3.amazonaws.com/zaxawetawupo/dafevulexetatoxedod.pdf
    • https://uploads.strikinglycdn.com/files/43676b4f-02d3-4a55-9927-dcc760f1aa3d/how_to_calculate_dividends_from_stockholders_equity.pdf
    • http://bodudenijijeb.onlinewebshop.net/bsc_bed_syllabus_2020_brij_university.pdf
    • https://s3.amazonaws.com/dubiditiginowo/79629158027.pdf

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