Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb45ab5362603b5…

MALICIOUS

PDF

51.6 KB Created: 2021-06-03 23:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 63ca0b07b9842cbfc2d7b55cb4a7bda9 SHA-1: d96eeb6b33ca6667408cf930223795c19aba7a12 SHA-256: aeb45ab5362603b5a64a9b2af8fd128f7b40a77d8d5d7cef79512435e2b2b6f4
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The document body and heuristic firings indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.online/app/431946152/free-robux-without-verify-game-hack In PDF document text
    • https://library.kysm.edu.my/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://www.library.kysm.edu.my/repository/vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.kysm.edu.my/repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 24388 bytes
SHA-256: fcfded1a59a41ded71d9151deb1e7937c430f7f55a1a2a4d6de99399ba2cff55
font_01_sfnt_off000087b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B0 3988 bytes
SHA-256: cae109800bfb13617a89cac146786a702f9be7f1c775cd1271f82ecdefe8dd39
font_02_sfnt_off000094c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C8 6768 bytes
SHA-256: fa93de321190668b294ff46149e4b98ac349b4fd022dcee9ecd964f7f59f3f9a
font_03_sfnt_off0000a506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA506 18916 bytes
SHA-256: 511fbd4ba16aacf51779f52d01f2fc894dffaba514ce449b994b41b42032bc0e

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