Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff155df494a0fdf…

MALICIOUS

PDF

45.6 KB Created: 2021-05-18 03:09:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 094b7a69d2bfc3241996888db402fa16 SHA-1: 4725c5d74ac6e35ea59ceb7f957ce1bb6b9e6e6d SHA-256: 5ff155df494a0fdfb2be1dd7924dc06267bbed72cd43a5ae7942a88000827e01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external sites, identified as malicious. These links are presented as 'free generators' or 'game hacks', a common lure for users. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content, possibly leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/level-coin-game-hack In PDF document text
    • http://alcomet.ru/images/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-spin-link_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-pe_GM479516143.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://alcomet.ru/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A48 25656 bytes
SHA-256: 2866ab39e784f3b662857af644506ce629c4a19cb3a62ec6f47684b06b35b915
font_01_sfnt_off00008520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8520 4000 bytes
SHA-256: 1ff5425721292d849d2bd87a1e451feba2b743a848c380b09e19f57af3bfdc2a
font_02_sfnt_off0000929a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x929A 17400 bytes
SHA-256: cd90f0e27c97aec7875c8622f96aaddce3568dbf304674e2b8a10a5ddcea6088

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