Malicious PDF — malware analysis report

Static analysis result for SHA-256 88871becd8e1cf81…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:40:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f03851b1b19910cae9849630e76652d5 SHA-1: ae710d96b981a7a5c84172b319adbab3191172ea SHA-256: 88871becd8e1cf8198d1078b154f1cb593edc5fdeee6c1e728f7f585a9a393d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirectors and potentially malicious domains, disguised as a lure for free game currency or hacks. The embedded links, such as 'https://netcdn.online/app/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack', are designed to lead users to further malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack In PDF document text
    • http://abdinusababellibrary.ac.id//repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/roblox-free-for-all-area_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/hack-download_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/minecraft-xray-hack_GM479516143.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_off00005503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5503 24464 bytes
SHA-256: c5516d68b05dfaa57b20d9cc30465637b7533892180ce387bbaa725cab564784
font_01_sfnt_off00008bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDE 17872 bytes
SHA-256: d23bbe04ef3196a5fa54f397c57d78b821aa47262b4b410e5e0dbd5db48197bd

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