Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0b0421bc293839…

MALICIOUS

PDF

47.7 KB Created: 2021-05-12 07:14:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1a2a97031a7a4f8ee8428245fb0ad3ba SHA-1: 69df3b3f4fc45fa4b7dcd9c1b6b23af08fbbf5cf SHA-256: 0d0b0421bc293839ec46056489bb14d5e8e1b95d323e727803b52d1647e02b74
180 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 free generators. The primary lure is the URL 'https://netcdn.xyz/app/479516143/minecraft-free-download-laptop-game-hack', which is associated with known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.xyz/app/479516143/minecraft-free-download-laptop-game-hack In PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/easy-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004fc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC4 27440 bytes
SHA-256: 7ab48b78da12b445805dd049037baa6833bba894f45007831d3fed6281d6f80d
font_01_sfnt_off00008da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA1 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off0000978a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978A 18464 bytes
SHA-256: 6197069052dd1f902b9484e0bf6d7537b85552f28950007395536a6c9025e818

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