Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d447c7653155db…

MALICIOUS

PDF

53.3 KB Created: 2021-05-16 12:30:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e7dec0b7293cf934524c99e1d8c47b6b SHA-1: a4d158f313fc9f6179178c873b815e7dfee81d49 SHA-256: b0d447c7653155db49caea97a7fe181baee24309a7da90caaeec661f6cc62e4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users with promises of free game currency or hacks. One primary link, https://netcdn.xyz/app/431946152/free-robux-only-1-step-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9112

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-robux-only-1-step-game-hack In PDF document text
    • https://invertsports.com/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://invertsports.com/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://invertsports.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/www-coin-master_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://invertsports.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://invertsports.com/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://invertsports.com/images/free-roblox-premium_GM431946152.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_off00004c11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C11 38840 bytes
SHA-256: 469e85632e24cf346e6c369572bc574b8fda2397b89bdc65307adb257ff96a99
font_01_sfnt_off0000a0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B2 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000ad5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD5A 18656 bytes
SHA-256: 070bf31dcf9002553526675ed1cd7b39f0747279791c235f0424fbc506b236c5

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