Malicious PDF — malware analysis report

Static analysis result for SHA-256 99267e058bb725fc…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 06:25:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ab59ef9f1d06b72b3dd3ee4f585201ba SHA-1: 5c015a2f22c7c2f5e24ff64aeb7c05e0b2f542cf SHA-256: 99267e058bb725fc1af4e11f1e1f5aabbeef534498ee3ab9ab0a4682e2dc118d
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free in-game currency to trick users into clicking malicious links. The document contains numerous links to redirectors and SEO link farms, including the primary malicious redirector at http://netcdn.co/app/431946152/can-you-get-arested-for-having-a-roblox-hacker-group-game-hack. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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.
  • 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/431946152/can-you-get-arested-for-having-a-roblox-hacker-group-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-use-winrar-for-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-fly-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-hack-on-ipad_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-in-to-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-into-roblox-groups_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-a-shoulder-pet-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-knife-code-assasins-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-date-and-time-hack_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_off00002ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECB 22480 bytes
SHA-256: 47dca750942de672c6c072f4e41bea8dc9d82e003e573899a2c559c158b6a85b
font_01_sfnt_off000060da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 19812 bytes
SHA-256: 92906836d9b0cbbb564514919e1d1f5716feb850b2c6b2d01044dd71f8c917e3

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