Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa642283f7772aba…

MALICIOUS

PDF

36.2 KB Created: 2021-06-22 14:43:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f40bcd5c9b21193b4a921208bc94e93b SHA-1: 5333ae8b8f170828dfb7f6c4b9a4c125422ad708 SHA-256: aa642283f7772aba381df3b0b225cf2e35c91bd6b37cdb89c51e5489841a100e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure, 'top-10-free-robux-sites-that-actually-worked-game-hack', directs users to http://netcdn.co/app/431946152/top-10-free-robux-sites-that-actually-worked-game-hack, which is associated with malicious redirector infrastructure. This suggests the document is part of a phishing or scam campaign designed to lead users to potentially harmful websites.

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/top-10-free-robux-sites-that-actually-worked-game-hack In PDF document text
    • http://www.peterbarsony.com/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-card-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/http-roblox-hack-mobile-generator-net_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/tiktok-free-nose-job_GM835599320.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-map_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-welcome-to-farmtown-beta-hacks_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-inspect-no-waiting-saves_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000304f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x304F 23200 bytes
SHA-256: f89f369ace1abbed4a9b9d9ba4a716a6f418954ae01c4eab635d3ee3ff37517b
font_01_sfnt_off00006493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6493 20356 bytes
SHA-256: 623a6e6f40f38fcc2e9ebfb88ccccf9488be30e9aae2ece0bc52cb0b5bc7c91d

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