Malicious PDF — malware analysis report

Static analysis result for SHA-256 c09581ac366e2a7f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 23:31:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2afba745f75abef4b049f34da07327de SHA-1: ab67c6a1db242fa01544d9835d54402d164c4c0d SHA-256: c09581ac366e2a7f0654116cea5e7c5c8cdcba79141ae3409f785f79e0599a07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "free Robux" and "game hacks". The heuristic firings confirm these links point to known malicious redirectors and lure users with game-related scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to drive users to a malicious website, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/is-free-robux-real-game-hack In PDF document text
    • https://gastroration.ru/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://gastroration.ru/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://gastroration.ru/images/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://gastroration.ru/images/free-coin-master-account_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://gastroration.ru/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://gastroration.ru/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://gastroration.ru/images/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://gastroration.ru/images/daily-free-spins-coin-master-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FD 25524 bytes
SHA-256: 748812d7aa74301b407856976ce3c6f3418f668add10d74ee3448ce147c2bb13
font_01_sfnt_off000083f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F3 18316 bytes
SHA-256: 9bdcdb8e91d3ea0453a36ee7825602dfd4ad5462dbe9555a8ca018b76ca04954

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