Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3015022a487031…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 04:17:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 723e4300ab33758e74bbb2d61528771e SHA-1: 1314709c2ee33980bf18d35620ea467e625963d6 SHA-256: be3015022a487031de1bda42c4fbce3c7b498f26d04234a3b6cd3501579fa178
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL identified is http://netcdn.tw/app/431946152/get-robux-com-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites.

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/431946152/get-robux-com-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-gift-card-codes-list-november-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hacks-robux-gratis-rapidos_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-book-bags-on-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/ex-7-roblox-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/pubg-2021-uc_GM1330123889.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cheat-engine-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-marshmello-shirt_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-accounts-not-banned_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/shirt-roblox-2021-free-dowload_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-hats-no-model_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-unblocked-roblox-games_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-keeps-crashing-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-how-to-hack-into-anybodys-account_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-unlimited-roblox-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_off00002ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFB 22016 bytes
SHA-256: 732456cbe1cfc1351bfbd07a4d1091433505bbe8a6a7e1349871bf230ece0b03
font_01_sfnt_off00006099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 18916 bytes
SHA-256: c2efe05e9d2138b719f685e0e190c44da44493e238d9fd68d8d9349a0cba08af

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