Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e41ee9b42d5e192…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 07:51:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 14bd545c182f9459f06190b33c6c2027 SHA-1: 2d17cf964dba2e285292cbfbeab2dab7aa784425 SHA-256: 0e41ee9b42d5e19268742a6bc3c15849a62d58fe7863be9f4bfdc5372720a6c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux codes' and 'game hacks', directing users to a suspicious URL. This URL, http://netcdn.tw/app/431946152/free-robux-codes-2021-game-hack, is likely part of a phishing or malware distribution chain. The ML classifier also strongly indicated maliciousness, supporting the observed lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.tw/app/431946152/free-robux-codes-2021-game-hack PDF link annotation
    • https://i-photo7.com/image/data/files/all-of-the-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coin_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-roblox-free-play_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/hack-roblox-volar_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/robux-free-gift-card-org_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/dll-hack-for-roblox-on-windows-7_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/roblox-black-pants-free_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/who-to-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://i-photo7.com/image/data/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA7 21796 bytes
SHA-256: 678378b5c5a047b5198b048db4b8ce7a6ed0a27cbb4b0772d13b04e0aa96f1f0
font_01_sfnt_off00005ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA8 19292 bytes
SHA-256: a06e109f4742255b3e3bb25118cfd4c6c94882922bdfaa475a115917b157a644

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