Malicious PDF — malware analysis report

Static analysis result for SHA-256 74757b981d46c6cc…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 08:06:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 09060321142eb129a7812c827cb9dd27 SHA-1: 096eb709c0c89d587f14cd1714ecf9da6758f531 SHA-256: 74757b981d46c6ccb67bdb180ff43a9eaf15d8ca74a9c143c8d134f209adcfd5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and generators, identified as malicious redirectors. The document body explicitly mentions 'Coin Master Hack Xyz' and includes a call to action to access a generator. This indicates a social engineering lure to drive users to potentially malicious content or downloads.

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-hack-xyz-game-hack In PDF document text
    • http://oca.undil.tl/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-accessories-for-free_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/pokemon-go-free-apk-download_GM1094591345.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/aether-hack-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/cheat-budy-roblox_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/robux-games_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/how-to-use-money-hack-in-roblox-any-game_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
stream_002_off000030b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30B4 22696 bytes
SHA-256: 6ae14d5da8f314b3bbc6467a2e53c9e4c00754a350ab18e14003e53dec128c27
font_01_sfnt_off00006359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 18496 bytes
SHA-256: bd2c90d618eff90014fde70917c30f451870fa3342cf3e365369efdfab30b31e

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