Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1922d54ef2099c8…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 07:31:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2e7fd389259372a546379d150918b675 SHA-1: adb970330a660f273a0edba216dd65c17a6a8f6b SHA-256: b1922d54ef2099c84f06064aa6901a5818a034fc4c4ed63940dc18e5f432f3b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to lure users into clicking on a URL that leads to a malicious redirector. The primary lure is for 'free Robux' or game hacks, which is a common social engineering tactic. The document's structure and embedded URLs suggest it is part of a phishing campaign aiming to redirect users to potentially malicious sites for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/como-conseguir-robux-gratis-sin-hacks-android-y-pc-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/rone-space-robux-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-builders-club-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-you-hack-a-server-on-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-coin-master-hack-no-verification_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
font_00_sfnt_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 22132 bytes
SHA-256: 1da9c8ddb6e87f683f7ca92dca4c463447959f2615be7387f0f113dbe2bdbac2
font_01_sfnt_off000060f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F5 19508 bytes
SHA-256: 5fdbe6e86cd02d723dd3244d86026d13f5a4784f1d428fdb9e064193da224228

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