Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae33614f36f183d…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 22:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5f7a626cb4d1351a1003d43304c5a18a SHA-1: d48bcd8e4d3493808c444e0e294ea4d900e583b7 SHA-256: dae33614f36f183d7bb67d757a3457bfb5d0704edd5f5123c364943ff8d611d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game spins and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack vector.

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-spins-link-blogspot-today-game-hack In PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-tycoon-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-use-cheat-engine-on-roblox-without-getting-kicked_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-robux-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-codes-without-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-free-robux-in-roblox-ipad_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-prevent-roblox-from-detecting-cheating_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-sunset-city-money-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/walking-through-hack-roblox-v8_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-vehicler-simulator-afk-money-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-hack-your-roblox-avator_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/dungeon-quest-roblox-farming-hack_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-wallpaper_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/blackout-hack-roblox_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_off000030c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30C9 22444 bytes
SHA-256: 4ccfc8a10e73fcfbf1018dff701c8806201876f52056aa4d9dcacb5f74c7ebe8
font_01_sfnt_off0000628a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 18988 bytes
SHA-256: 6a8df04ccae10a065ca98fcfc54022d1229b866efd1053a60935e255eebfda7f

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