Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44729a096e8dbfb…

MALICIOUS

PDF

43.8 KB Created: 2021-05-16 13:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b82f0ae28e9a70f94cab6b9227a90915 SHA-1: 798b019b1e68161995a63c57c75df53a19507e09 SHA-256: a44729a096e8dbfbd4c2e1d983e295ea3b8c44d619eef1d8f418542723e86cc1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and potentially unwanted content, such as free game hacks and generators. The document body and embedded URLs suggest a lure to trick users into visiting these sites, which likely host further malicious content or phishing attempts. The presence of a visual download button further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/free-minecraft-hacks-game-hack In PDF document text
    • http://huananhai.net/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/moon-active_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coun-master_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/minecraft-free-download-windows-10_GM479516143.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_off00004a55.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A55 28916 bytes
SHA-256: b5adea3898a3fddc6df7dd2f093304eee7cf86f3ec32c5a0d9fe1c34037ae434
font_01_sfnt_off00008abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABC 17740 bytes
SHA-256: 02673fc9b31aa1f7767db1cd16a9f6370da751ac2c2fa3ca820772adadbcecd3

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