Malicious PDF — malware analysis report

Static analysis result for SHA-256 145af55a3ac2ee5a…

MALICIOUS

PDF

32.6 KB Created: 2021-05-19 22:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 282c17681c5150da3ff6b629b5a9eb70 SHA-1: 00bc33fa4963a6070996c81162760ea5fe070ae4 SHA-256: 145af55a3ac2ee5a55a6ff4b10f62586962a7898fa9dbd351d84184ba323d0ec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to websites offering game hacks and free in-game currency, identified as a lure for malicious activity. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs are associated with known redirector infrastructure. The document body and extracted URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • 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://netcdn.xyz/app/406889139/coin-master-free-spins-2021-ios-game-hack In PDF document text
    • http://algierimasonry.com/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://algierimasonry.com/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://algierimasonry.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004958.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4958 25824 bytes
SHA-256: 53f92f0c5be94f5c186c897e2fd38683a93d6977ded58874c32698f37fd51590

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