Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecce1dfcbd21a7e…

MALICIOUS

PDF

35.9 KB Created: 2021-07-07 15:53:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 33e2442fdec42890304164d204b22ddc SHA-1: 6d2a24f391f49d3a6552965ddabf85bf68dc81d5 SHA-256: aecce1dfcbd21a7e8241e2e5b9dc8ef3dc37abdbbd786d33d057d3bbd6f6a1f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and generators to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free in-game items to initiate a malicious download or redirect.

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/479516143/minecraft-diamond-finder-hack-game-hack In PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-to-use-cheat-engine-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/how-to-get-free-robux-by-using-cookies-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/como-hackear-a-gente-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/get-400-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/hack-welcome-to-farm-town-beta-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/free-gfx-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/robux-gift-card-codes-free_GM431946152.pdfIn PDF document text
    • http://elearning.miscm.id/__statics/gudangsoal/files/roblox-ninja-animation-hack_GM431946152.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_off00003610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3610 22652 bytes
SHA-256: b0e8e177e5b84daa541a134f56d195e0f6ca5c75989bff2fa89ccbfbcdbcd134
font_01_sfnt_off00006871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6871 18768 bytes
SHA-256: 1598c3682c859f253aba253f2e5c14b5c25da3ef850df7010b86b0bb11aa0ad8

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