Malicious PDF — malware analysis report

Static analysis result for SHA-256 a78c905e1f0edecf…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 02:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b30e457214b8aff533b0fe5eb6fdf895 SHA-1: 298d45c403e6b01a64b656b4b9766f0ea9c42e44 SHA-256: a78c905e1f0edecf6004e959be6097e7c5d4393a10052e1ffa98f9fea7461634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on "free generator" or "game hack" offers. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-coin-hack-game-hack In PDF document text
    • http://bassacctaxservices.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://bassacctaxservices.com/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://bassacctaxservices.com/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://bassacctaxservices.com/images/best-way-to-get-free-robux_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
font_00_sfnt_off00004a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0F 24616 bytes
SHA-256: b70abd6d31bb0c9189743bed38034b8bf004d64993705d72770435b2a6e29a97
font_01_sfnt_off00008296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8296 17880 bytes
SHA-256: 9d1f455011f0aa7862855f259ab9ea2efa3be9ec050c3ec97e4c793879e57b5c

Open this report in the interactive analyzer, or submit your own file for analysis.