Malicious PDF — malware analysis report

Static analysis result for SHA-256 7077dffb843752b5…

MALICIOUS

PDF

41.8 KB Created: 2021-05-16 18:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3fd8be00d2b6a4652758b813c11d104c SHA-1: 3062a0d641d81d5623fad7d614213125328c110c SHA-256: 7077dffb843752b58d82d1141d8b941f6ee40cced7c46d449cf2a3b3c3373a94
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for 'free Robux' and displays a fake CAPTCHA, aiming to trick the user into clicking a malicious link. The embedded URL and numerous other URLs point to sites offering game hacks and cheats, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/free-robux-site-game-hack PDF link annotation
    • https://www.guterdj.de/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/freerobux-co_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.guterdj.de/images/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.guterdj.de/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://www.guterdj.de/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/robux-miner_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://www.guterdj.de/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000480f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480F 24628 bytes
SHA-256: b8594bcc9fb17fbe37aef696b2129769d46fbb432b59807278a53f3346e6d2ac
font_01_sfnt_off000080f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F2 18236 bytes
SHA-256: d17cd47be652198dd65b1182653c5b68eec39c9a25c2fe205f68dda680ae7be3

Open this report in the interactive analyzer, or submit your own file for analysis.