Malicious PDF — malware analysis report

Static analysis result for SHA-256 76bb28e751b8ae90…

MALICIOUS

PDF

31.6 KB Created: 2021-07-04 10:09:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9ccdba804a70662651e8d25204d8a96d SHA-1: e128cd4a611f82e97d9c15111a84b791639bbc17 SHA-256: 76bb28e751b8ae9049881ce1ab884bc764a898d609bc3955da1dfd32068c7ba2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure. The document body and extracted URLs suggest a lure related to game hacks and in-game currency, likely intended to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-the-pizzeria-fnaf-2021-money-hack-game-hack In PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/easy-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-robux-2021-free_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-comment-metre-un-script-cheat_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-apps-similar-to-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/3-roblox-hacks-you-need-to-know_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-apk-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/script-for-robux-free_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-account-stealer-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-website-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/como-hackear-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/rare-roblox-hacked-face_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-jetpack-simolator-hacks_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/roblox-i-ts-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning.man-purwakarta.sch.id/__statics/gudangsoal/files/hacking-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D8 23084 bytes
SHA-256: 009f0740d3625efc934aa145cf9b11e8bddcca545c0b048d706ac50e4c09db8b

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