Malicious PDF — malware analysis report

Static analysis result for SHA-256 8019e4d121cc007c…

MALICIOUS

PDF

33.3 KB Created: 2021-06-18 05:56:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a7ba39e56ecacf0a186d4d9f22013bc7 SHA-1: c39a4a0e496d14cbdeed980d1437d905e3441b8d SHA-256: 8019e4d121cc007c0aa8911b48cb8dffb179048018af720301b85994db661827
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly mentions free Robux and Coin Master spins, indicating a lure for users interested in these games. The presence of an external URI pointing to a suspicious domain, coupled with a high ML classifier score, strongly suggests malicious intent. The document likely serves as a phishing or malware distribution vector, attempting to trick users into downloading further malicious content.

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/roblox-free-robux-com-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/robux-cheats-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-pass-hacker_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-coins-and-spins-link_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_off00002df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF1 21472 bytes
SHA-256: 5357587c75a3ea834c30099e9e90bc478bff0716d69d515b2baa28068cf49576
font_01_sfnt_off00005d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 19052 bytes
SHA-256: 3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426

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