Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1eea1f4ed288fd7…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 10:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 40ad2bbe14327f325f05ee5f07f195b8 SHA-1: 20cbab37d018336c7df389b9944cad28c745338d SHA-256: b1eea1f4ed288fd77ecfe9e060517a090c6a1c66dcbd88147cc5bcc1b40971c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body and heuristics suggest a lure for game-related hacks or generators, which likely leads to a malicious download. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

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/coin-master-hack-ios-cydia-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/snip-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-install-roblox-jailbreak-hacks_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cute-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-roblox-items-free-working-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/jailbreak-free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-obc-robux-inspect-element_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-and-get-a-free-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hack-roblox-counter-strike_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-actually-fly-hack-n-roblox-fe2_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-without-downloading-stuff_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-money-logo-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-without-human-verification-and-no-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/lazyblox-free-robux_GM431946152.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_off000030e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30E2 23036 bytes
SHA-256: bc1f097129b7f623b7bbf6797e8b5811ec00991e48daef2225d6f71e87e58f40
font_01_sfnt_off000064b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 18356 bytes
SHA-256: c09b0b28df115d3bd359a7912cd1a4c3792fd5da5b0a9bc4eed149ec2eaef80b

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