Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa82490acc1f6a0e…

MALICIOUS

PDF

52.4 KB Created: 2021-06-10 23:03:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 028a915b5509c692a0df429f77a8fd41 SHA-1: ca6293518bfa437168e104187f65d7aef5ba0873 SHA-256: aa82490acc1f6a0ed415f2480a05093f180f64017683364a187efb71adb57397
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for unlimited in-game currency, directing users to a URL that likely hosts a malicious payload or phishing content. The presence of multiple similar URLs and the ML classifier's high confidence indicate a malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

Heuristics 4

  • 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 https://netcdn.tw/app/431946152/how-to-get-unlimited-money-in-roblox-hack-game-hack PDF link annotation
    • http://atmos-service.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-vouchers-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-do-i-earn-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-jailbreak-hack-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-2021-december_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-make-my-own-coin-master-cards-hack_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_004_off00005442.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5442 30364 bytes
SHA-256: 7e7b9d5cd07ccc9c97d311343762e1df1bf9d8d3822233156135a1b2950679d1
font_01_sfnt_off000099d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D7 3856 bytes
SHA-256: cf71e8e4f9a46d96032d85c48fa521b592053b6b490b98b65de2614032c19da1
font_02_sfnt_off0000a6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6BC 19568 bytes
SHA-256: 4e962e8b57322708feaf3e2f5d3c4329b23e6b02c0083031b595acda4ae53945

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