Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6b175277dccb0b…

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 08:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d87d1454aae2dd3842b8b502a77c8323 SHA-1: dc5e249a0c5bf68166e2151e6355bd5d4a6dcc05 SHA-256: 7a6b175277dccb0b8ed59a85749dcdaa56b68be30c86fed9f0d8d37e7715399a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting a 'game hack' or 'free coins' lure. The document body and heuristics indicate a clear intent to trick users into visiting these malicious URLs, likely as part of a phishing or scam campaign. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-free-coins-link-2021-deutsch-game-hack In PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/microsoft-bing-free-robux_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_off00004cf8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF8 24788 bytes
SHA-256: ade7ee04344602b36eae8520bf810ae170afab0d6f215e51d5cc39b25711a608
font_01_sfnt_off000085b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F66 18756 bytes
SHA-256: cee569ad26c6995f0462545108d280bf76b2c9dfe620e2643f0a7a8ec4db527a

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