Malicious PDF — malware analysis report

Static analysis result for SHA-256 6947350a74666537…

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 03:02:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 599a7eab3acecdb66a37bcbddd67c584 SHA-1: 3561693a99116592875e12d5848db7665bb5cfdc SHA-256: 6947350a746665378fe94d3e3019e11fb41ac744a706aa506e93dd1c9046e6f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising game hacks and free spins for popular games. The primary lure appears to be a 'Coin Master Free Spins' generator, directing users to http://netcdn.tw/app/406889139/coin-master-free-spins-a2z-help-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites, potentially 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.tw/app/406889139/coin-master-free-spins-a2z-help-game-hack In PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/can-my-childs-friend-hack-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/5-robux-free_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/robux-page_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/who-hacked-roblox-in-2021_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/free-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/how-to-get-hack-on-roblox-to-walk-through-walls_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/roblox-ultimate-driving-westover-islands-how-to-get-free-cars_GM431946152.pdfIn PDF document text
    • https://www.pswpallets.com/uploaded_files/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000353e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353E 22904 bytes
SHA-256: d55f9f1dc15c984ee6b51710b305683281fc585bfcef4c1bd8681f4639434f3f
font_01_sfnt_off000068e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E6 18464 bytes
SHA-256: 38371b38e202a061bb85b2c2f3babff414a9c8e1a23fd0033143b7789bcb9fac