Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2bb67a3f2521569…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 01:51:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e1e36dd4697eeea85acc8026aab2eb3 SHA-1: c7f76e37b7ddb7dbe68184d0c2e3353b504d8679 SHA-256: a2bb67a3f2521569b15be2a878b2eb6662c8ce4fd7d4a462e4ac35d6194c00bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'free generators' and 'hacks' for popular games, which is a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. The embedded URLs likely lead to further malicious content or downloads, acting as a lure to trick users into clicking.

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-foxy-food-game-hack In PDF document text
    • http://moneymaker-gold.de/files/spiderman-free-roblox-stuff_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/best-tycoon-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-hack-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-com-free-skin_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/good-roblox-avatars-for-free_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-roblox-blue-hair-com_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-music-codes-roblox_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spin-codes_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
stream_002_off0000312d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x312D 22784 bytes
SHA-256: 08b3ca6395eb4112a623dca2c570383f3b1f1c19fc772c279a1bad3483befd22
font_01_sfnt_off00006443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 18564 bytes
SHA-256: 4e08a9fe38938dbf04ccb9f1ad2aa5bec9d413f8e0a851b44050773223700f32