Malicious PDF — malware analysis report

Static analysis result for SHA-256 3214131105f86e5c…

MALICIOUS

PDF

32.9 KB Created: 2021-07-05 08:40:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 10f6a25615e806644a32b30f6d1c3766 SHA-1: b3373e15d5b055cfa3792d9522da6bfc151728cf SHA-256: 3214131105f86e5c6879fcb4a683d7f87e74014eac2716f9719bf436a1f5e701
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links, including one that redirects to malicious infrastructure, masquerading as a game hack or generator. The ML classifier also flagged this PDF with high confidence. The primary goal appears to be directing users to potentially harmful websites through deceptive lures.

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.tw/app/431946152/roblox-sexually-game-hack In PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/how-to-get-free-1b-on-roblox-and-patebin_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/can-u-stiull-hack-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/roblox-computer-hacking-game_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/how-to-report-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/redeem-code-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/free-promocodes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/2021-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.jewelspell.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-today-gift-reward_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_off00002d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D68 21388 bytes
SHA-256: 5f40b59a22df2fcfd53dab8cd254dc220538255c8d0dd0ce5d894d8fa929606d
font_01_sfnt_off00005c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C14 18804 bytes
SHA-256: ac65bc2350733491bf8b1f5a6175b8e6669ededf8897379c42ae9d533bb69578

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