Malicious PDF — malware analysis report

Static analysis result for SHA-256 1beefa4ddcf4317e…

MALICIOUS

PDF

34.9 KB Created: 2021-06-24 04:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cca3bdb5ccf2794e82f34428e8d9b2b3 SHA-1: f2a8382581b12ab4cace13852ae8b3205acd55c3 SHA-256: 1beefa4ddcf4317e2f4d991b3ffe5e446e0a7db5f507b594038196bd93a5bbb2
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a link farm strategy, presenting numerous links to external websites that promise game hacks and generators. The primary URL, http://netcdn.co/app/479516143/minecraft-xray-hack-game-hack, is directly associated with a lure for game hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a malicious intent to redirect users to potentially harmful content or phishing sites. While no scripts were explicitly extracted, the structure and linked content strongly suggest a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/minecraft-xray-hack-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-lifting-simulator-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-hack-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/cheats-glitches-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-hair-roblox-boy_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
font_00_sfnt_off000034da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DA 21960 bytes
SHA-256: 37ec944791ab49d86d348eec3519f2920d765aac548c9c3f6392016cb79480b4
font_01_sfnt_off0000654d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 18432 bytes
SHA-256: 387b7b526c621f44d63a31baef35ce25152a59c4b2bb3bea0ec40756a9ef9a45

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