Malicious PDF — malware analysis report

Static analysis result for SHA-256 626bdcd7fd96bba5…

MALICIOUS

PDF

34.2 KB Created: 2021-07-02 04:11:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c7a2b01c95a0060293d77af9816ff6d SHA-1: 8f460edb34f53f28ca67531a126308d1c1943baa SHA-256: 626bdcd7fd96bba5b7abe2821c7fb5b3fbaec4c60f4e2293ddb99430a5a7af3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, masquerading as free game currency generators and hacks. The document body and heuristics indicate a lure for potentially unwanted applications or further malicious content. No scripts were extracted, 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.co/app/431946152/free-roblox-gift-cards-2021-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-dragon-ball-rage-hack-december-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/strucid-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-in-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-catalog-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-party-favor-tags_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-an-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/hack-money-for-roblox-lumber-tycon_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-exploits-website_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/websites-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-change-name-hack_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
font_00_sfnt_off00002e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E21 22024 bytes
SHA-256: b3fa106c04c1ab25032e6082ce7909fe94be549e381bed9667512b3410dc8f5c
font_01_sfnt_off00005f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F46 19452 bytes
SHA-256: 8115ccb621edd4612311f62a2018219b20574293e23f0c1b138e5e1805582403

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