Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c242daa1cc9fe5…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 18:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9b707cfe31c9254a5a812f8935fc2d48 SHA-1: 6bcabe22ee3c6a8bced749b82266273f0c96ae99 SHA-256: 34c242daa1cc9fe55ba9d37ec4bfe057eeeb100df15951bc9470f8079f081d87
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/roblox-r-cheats-2021-game-hack PDF link annotation
    • https://i-photo7.com/image/data/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-test-site-free-bc_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/hack-para-volar-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-spin-link-today-free_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_off00002f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8F 22568 bytes
SHA-256: 549234857d2b30e5dbea6c6f085df8df5d42580321f4b7485798d87594198f8e
font_01_sfnt_off00006244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6244 19160 bytes
SHA-256: 9619885ab84b8f76d35dc50460558ff2b12d0b00d50949f5bab89ab68d09fbc2

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