Malicious PDF — malware analysis report

Static analysis result for SHA-256 7219135967118d54…

MALICIOUS

PDF

46.2 KB Created: 2021-05-16 07:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 58bd57cef6904b5519668726ec2d3d7b SHA-1: 53be4efb6a43a097087a2512005706df0843df08 SHA-256: 7219135967118d54257195a72148be3350678e2ef594893b4af36f778a019b4e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lure users with promises of game hacks and free in-game currency, specifically mentioning Roblox and Coin Master. The primary URL, 'https://netcdn.xyz/app/431946152/roblox-group-free-robux-game-hack', is directly linked to a game hack lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to potentially malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/roblox-group-free-robux-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-spin-generator-for-coin-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cd4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD4 25412 bytes
SHA-256: 2f32e7c5762911883582e05a9ecb0b10e86e79040d2c465223a9fe62082f1a8c
font_01_sfnt_off000087c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C8 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off000091f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F2 18264 bytes
SHA-256: b2792b9995997ff68e5dfa2acea2bbc639d657441038e216f117c3302624ca62

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