Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb46cd943ea9a00a…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 18:18:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0276480928f0d9d13aa1de2f192e0a76 SHA-1: 7acfe75ae2a5f3f04cafc29c8331ce156f0118e2 SHA-256: bb46cd943ea9a00ad83bf8d1ebaaeb517aeccae5d73733975264b93c4515fb79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/hacks-robux-gratis-rapidos-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/weird-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-apocalypse-rising-2-teleport-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/money-cheats-sims-jailbreak-roblox_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_off00002ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE8 21876 bytes
SHA-256: dccebce78c4a842fbb00218347a8c462bb22ba0233baedb7778fe54b61603536
font_01_sfnt_off00005f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F27 19296 bytes
SHA-256: 9d9027830f4fe7457b56908aaed0bd0ac0b04596eae27a23953606f500cb5181

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