Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f54fed11ea81b95…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 17:30:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2683c8336c07849d3e788d1e2d4f06b0 SHA-1: 4137bdaa1f15800900ecaeeac1322816e00519d2 SHA-256: 0f54fed11ea81b951b083bb3b2a25f24684f6c15346d104f624dcd98baabc409
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free currency, directing users to a malicious URL. The ML classifier also flagged the PDF as malicious. While no scripts were extracted, the embedded URI and the nature of the lure suggest an attempt to redirect users to a potentially harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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 https://netcdn.xyz/app/406889139/free-spins-coin-master-daily-game-hack PDF link annotation
    • http://eooe.gr/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/play-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5C 26648 bytes
SHA-256: dc3425f0b65da18131c30099428dfdb576ebffe7cfde1f9462a9476817987452
font_01_sfnt_off000088cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CB 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000092b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B5 18308 bytes
SHA-256: 148513adc370bd80d4aa437ff839b9fedc0d32c70a1f1942828a2071191e315e

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