Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3728e331d09aeed…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 00:23:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 83166f962ad618ba036e4434e8ccaebb SHA-1: 206cc700fb86d4fe1dc5e322fe786ac01ea17584 SHA-256: e3728e331d09aeed25222c70cc7e2ed03b1445d8626dfccd06125c68a0ce2dd2
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be related to Minecraft and Roblox, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/479516143/minecraft-java-free-trial-game-hack In PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/hack-mod-menu-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-hack-roblox-and-get-robux-on-first-attempt_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-jailbreak-hack-money-generator_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-ohne-handynummer-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-robux-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/codes-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/unknown-cheats-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/free-items-roblox-codes_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/roblox-hack-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/how-to-get-10k-robux-for-free-2021-july_GM431946152.pdfIn PDF document text
    • https://slims.bakrie.ac.id/textbook/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn 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_off0000327e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327E 22436 bytes
SHA-256: 839778bec261a5a346de28664c5a2888341f8cc0fb69b398dd8f1862d659b227
font_01_sfnt_off00006416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 18208 bytes
SHA-256: 68643087e46b3fff40d7f0bd4ffe078dd055d4c09ab99762e3c2ff4fa7ac324d

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