Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde12ce40319c353…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 23:33:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5194986b9fd0be26f882c4bde7313b9e SHA-1: 2d63b810ea1791e7ee440e2fd1fd2ad6c13f1cda SHA-256: fde12ce40319c3530e502b2a6cd8619cb6f27540427cad2ce8db6fc90feb0d00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator / game hack' lures. The document body, though partially corrupted, contains references to game hacks and includes the primary malicious URL. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves tricking users into visiting malicious sites via deceptive links.

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/free-spins-generated-from-coin-master-game-hack In PDF document text
    • http://hardbit.cn/images/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://hardbit.cn/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://hardbit.cn/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://hardbit.cn/images/free-robux-codes-no-verification-2021_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_003_off000045bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BD 24852 bytes
SHA-256: c5183dbeb31788dfc328ac00bd2e503b39f1af8767db8289214275683d47bf0a
font_01_sfnt_off00007ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDF 18320 bytes
SHA-256: d827f104b81aaf123e8ff1599fe12972b053c6881734e5a14a739a4b5a769c82

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