Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08fedf757e59a71…

MALICIOUS

PDF

45.4 KB Created: 2021-05-13 03:01:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 06be520ac515076559d6c00286593c16 SHA-1: d412842a9300414088bf3f4442a9bfff8081cd20 SHA-256: a08fedf757e59a7111ae1196548c00e59a7ff7a16ab6143e592338dee808385c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically targeting users interested in game hacks and free currency for games like Roblox and Coin Master. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to 'Roblox Fun Com Robux' and a URL matching the malicious redirector, reinforcing the lure. No scripts were extracted, but the primary attack pattern involves redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/roblox-fun-com-robux-game-hack In PDF document text
    • http://nitetpl3.com/images/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/rbx-earn_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://nitetpl3.com/images/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-hack-in-roblox-prison-life_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
font_00_sfnt_off000048a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A0 25540 bytes
SHA-256: 26e7ec2563d0b79a63ff5b97a3c9f79b35e5fc6dc976fd81f7c891098f79960d
font_01_sfnt_off000083dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DD 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F07 18348 bytes
SHA-256: 667e6d730a8a95846a6995e98a73d1f6ef2b359f0131404b1b78749ced9a3a97

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