Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac14830422256c6…

MALICIOUS

PDF

35.9 KB Created: 2021-07-05 18:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a675ace74fbeaaebbd604063a8521e6c SHA-1: 2cd742f92983a4764ca6b2b59d2cd1dd8747281f SHA-256: aac14830422256c6af211b26cfdd49adbe1546df0a9e77d6f1acec6645523be0
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, likely serving as a gateway to further malicious content or exploits. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at driving traffic to potentially harmful sites.

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-card-collection-hack-2021-game-hack In PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/cheats-for-roblox-realistic-roleplay_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/roblox-hack-account-download_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/bloxburg-free-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/cheat-roblox-mad-paintball-2_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/roblox-bundles-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/fake-free-robux-place_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/free-roblox-water-bottle-labels_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/roblox-free-robux-no-survey-or-download_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/blood-and-iron-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/hacks-en-roblox-volar_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/roblox-the-conquerors-3-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/cheats-power-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mi-nurussaadah.com/__statics/gudangsoal/files/20-robux-free_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
stream_002_off00003493.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3493 23064 bytes
SHA-256: 4431ef0572e68430d5cb60d4fc0b53cd38079b522453ae026ac333fe630d81b6
font_01_sfnt_off0000685e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685E 18656 bytes
SHA-256: ebe79e675d69cfb0b5c6058c2d9c6cc85a84d65455e0e2e2977962306b94f3cc

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