Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a3eaa5bd9a2b0d…

MALICIOUS

PDF

49.6 KB Created: 2021-06-07 14:11:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efd4db26c7011cfb2442635839367e4f SHA-1: 132dd60697047deeff05b4b060338bb6e187286f SHA-256: 64a3eaa5bd9a2b0d4d6ee1c194f16fbf957001f45c3ceb68ae607c589bee9caf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on potentially malicious content, disguised as game hacks and free currency generators. The primary redirector URL is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/best-roblox-hacking-guis-game-hack In PDF document text
    • http://zarinnameh.ir/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/pokemon-go-free-hack_GM1094591345.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/100-free-spins-coin-master-2021_GM406889139.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_004_off00004f1a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F1A 28760 bytes
SHA-256: 2603addf8b433992faeebe8600d9d01d7d29a433c3d08820c3aef078486cd3bd
font_01_sfnt_off00009059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9059 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6B 18836 bytes
SHA-256: 42975b4e3a449a6e67e6eb3f21d0509121b75b8954f34ab8a2c55f65c91c18f2

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