Malicious PDF — malware analysis report

Static analysis result for SHA-256 241c9f3c8fc2dc3f…

MALICIOUS

PDF

47.1 KB Created: 2021-06-09 04:09:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2959b53a90216c7a790dbc12a295da76 SHA-1: b2960630c1ff8500f301f2e7c586016a78e02b07 SHA-256: 241c9f3c8fc2dc3f21bd50ff1d647c59ba9c267a8e2a1ef60a3f462e59b298e1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors, specifically promoting game hacks and generators as a lure. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.tw/app/431946152/phantom-forces-roblox-hack-aimbot-game-hack In PDF document text
    • http://brokermortgages.com/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-roblox-hack-no-survey-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/join-any-roblox-server-hack_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/pokemon-go-free-healing_GM1094591345.pdfIn PDF document text
    • http://brokermortgages.com/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005523.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5523 27112 bytes
SHA-256: 1444f73eb9a7d3d3f45a27d9694226b8cb1129d77b41c566fda50f13a7b74eae
font_01_sfnt_off0000938f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x938F 19152 bytes
SHA-256: cca5eeb4f744151786d3fb8a4e622d2a3bf1edd5b4a25001bb2ee9048083854a

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