Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaeae3dd66d55ee0…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 23:45:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 994c8c7559cada99bc221fb50d0ff2e2 SHA-1: 72a3192a26433b6250370b5926b54f608e1e9160 SHA-256: eaeae3dd66d55ee04f935726a32e4e00d8229262194b09a3091b1032c8cafdf4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links, with one specifically identified as a malicious redirector leading to a "free generator / game hack" lure. The document body, though partially garbled, also contains the primary malicious URL. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect the user to potentially harmful content.

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/479516143/free-minecraft-capes-game-hack In PDF document text
    • http://www.ocic.hr/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/give-me-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/saber-simulator-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/hack-para-cualquier-juego-de-rpg-roblox_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/counter-blox-roblox-offensive-how-to-get-free-skins_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/best-roblox-outfits-free_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/avatar-animation-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-any-roblox-item-free_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/roblox-hack-dll-chat_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-roblox-items-2021-febuary_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-free-spins-for-today_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
font_00_sfnt_off00003093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3093 21864 bytes
SHA-256: 8fd38864fd406cf3b0641c24081aa087a31f61c17df419185307842d992121e6
font_01_sfnt_off00006060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6060 18032 bytes
SHA-256: 1e862981e003b551836a585810ec825e70eaac9e05fbd38dc5ef0e36a4934143

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