Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1c31fcea633c5e0…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 13:11:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d1c964d3b377462c14d16fe3f0b53f92 SHA-1: ee6c9608532b324de430f1f3b476729d2fe3c39f SHA-256: d1c31fcea633c5e02a3b47edd64517aa297a2d76a2494af3739e58fbcdd40ccc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or cheats. The heuristic firings indicate that the PDF is designed to lure users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a malicious intent to exploit user interest in game cheats.

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.co/app/431946152/money-cheats-in-roblox-pokemon-galaxy-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-btools-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-money-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/all-the-free-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tuto-comment-hack-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-go-free-versus-pc_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-download_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_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 22456 bytes
SHA-256: 91a21b4e3f48645e5fb41081691a88a7cec8d8605dddcc4210c49fa07b0b261c
font_01_sfnt_off00006024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6024 19716 bytes
SHA-256: 7bff2890e74293f783e729116180967b259ed045832fc095d1c534307e8e2e87

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