Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e08efa28a01e3dd…

MALICIOUS

PDF

55.0 KB Created: 2021-05-15 05:57:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 345a93ad5f0a035ffc6053d1b75a9b80 SHA-1: a5b6f0ac7063f05ca5aad3c39961a67c1b745ffc SHA-256: 7e08efa28a01e3ddd27d3724ec6159ccc3b7455692ad8e548613f68d74dbe580
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users into clicking on a "Coin Master Hack Apk Online" offer. The document body and embedded URLs suggest a scam or phishing attempt related to in-game currency or hacks. No scripts were extracted, but the presence of malicious redirector links and the lure indicate a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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-hack-apk-online-game-hack In PDF document text
    • http://huananhai.net/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/roblox-system_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://huananhai.net/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a94.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A94 27560 bytes
SHA-256: a7124d3a1a38924c18fdca6a9153b7843fb454b3fdb83dbab4fe2c95cf616f11
font_01_sfnt_off000088db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DB 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000093a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A6 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a6cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6CB 17968 bytes
SHA-256: 242ffb3ae23aaa88f863c4a264d986e0fcfba56dd77541db73c8f2987a2b9a1c
font_04_sfnt_off0000c7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7DE 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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