Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2db0f4e93100147…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 07:01:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac7e5787fca59aede8e367d6b98fe440 SHA-1: df7629b97488e3a4fdea796b704c425abf3b58f7 SHA-256: f2db0f4e931001472f374b51567e59a42cb9e0f9007937553d13797484fff345
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a clear call-to-action and an embedded URL, suggesting a phishing attempt to trick users into downloading potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a URL pointing to a game hack reinforces this assessment. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/install-free-game-coin-master-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-2021-code-jamais-utiliser_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-quickly_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/maps-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/hacks-for-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/diamond-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-emperor-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/dbz-rage-roblox-cheats-for-unlimited-power_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/spare-api-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-redeemable-roblox-cards-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/get-free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-people-on-roblox-without-downloads_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/where-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.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_002_off000032bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BB 22656 bytes
SHA-256: ec30f75f9d3e45d0b081ce98dd24894ee90df61dcdfff12a504665f5a9ca296a
font_01_sfnt_off000065b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 18332 bytes
SHA-256: d212333c85aa31425f07fcb274d9f5b35260b329917ccb36e51ab60c49de7971

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