Malicious PDF — malware analysis report

Static analysis result for SHA-256 734d9944ca346501…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 07:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 040557aa3aa5bb4c325f0bfede13e2e8 SHA-1: 381f520cf075af1fbe0ad084ce9995a6a6b09538 SHA-256: 734d9944ca346501d01b360d77523be3ae05f574885155fac801bb39cb480e00
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL identified is http://netcdn.tw/app/406889139/coin-master-daily-free-spins-link-app-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or scam campaign.

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-daily-free-spins-link-app-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-generator-2021-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-admin-commands-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-high-school-cheats-horor_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/builder-assistant-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-granny-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-song_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-mobile-money-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/los-hacker-de-roblox-mas-peligrosos_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-robux-hack-with-required-password_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pokemon-go-free-storage-upgrade_GM1094591345.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_off000031fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 23228 bytes
SHA-256: 228b2bc2c5d036d8811ffa95cc9e745c75172c8d930a2b228c6bc6f466de1e86
font_01_sfnt_off00006615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6615 18768 bytes
SHA-256: 1c5db3f7009fa9a9146ade2cbc2efb97c7baf1b0638c7caf06dc3a4af7679f36

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