Malicious PDF — malware analysis report

Static analysis result for SHA-256 a78bec5bef200260…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 10:52:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 9b353a0871dd6218a2ef9e822f04e5b1 SHA-1: 088ec19a6ed21e10f37019bd23380e8809068648 SHA-256: a78bec5bef20026075a10e847af01fcc6b076c03e75d947d974e64a363f39dff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as generators for game currency or hacks. The primary lure is 'Coin Master Free Spins Gratis', directing to http://netcdn.co/app/406889139/coin-master-free-spins-gratis-game-hack. The document body and embedded URLs indicate a social engineering tactic to trick users into visiting potentially harmful sites.

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/406889139/coin-master-free-spins-gratis-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/best-hacking-software-for-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-cheats-ipad_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-leak-a-roblox-map-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/paginas-de-hack-para-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/como-hackear-electric-state-rp-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/wie-bekommt-man-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-apk_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_off00002d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9E 22696 bytes
SHA-256: fb2a96471cd69d732b517aa67b4a1d33bbb58d1aba2b2431c4d50888ed72216a
font_01_sfnt_off00006065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6065 18176 bytes
SHA-256: 220cc08b156a25e7f0738aa2ffed122a04d3b7eef92f96fc2d602fbd09f3cf7b

Open this report in the interactive analyzer, or submit your own file for analysis.