Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd7c71a7122cec4…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 17:25:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b038df9b925d9dc7672641397d15642e SHA-1: a9c71f7ac1db6922d9cd071efb4bf03bfa30847f SHA-256: 6dd7c71a7122cec4cab4f70b3615e68eb676f9ea49099a2798388666f7074b37
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, with a primary link identified as a malicious redirector. The document body and heuristics indicate a lure for users seeking in-game advantages, which is a common social engineering tactic. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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-free-account-game-hack In PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/pubg-uc-center_GM1330123889.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/roblox-hack-jump-infinite_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-hack-no-verification-no-signup_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
font_00_sfnt_off0000318d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318D 23076 bytes
SHA-256: 02cbf51bf6657c7adb1420eb9a1558c1c1de29500a293fb372747bf521a51f0f
font_01_sfnt_off0000657b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657B 18140 bytes
SHA-256: 11f67ef085c710a7785db0f802dd38e36edd3c3b38e68f0579fce2295e93cef5

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