Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3a046565af0288…

MALICIOUS

PDF

52.3 KB Created: 2021-06-04 01:51:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0cdf85125d613fcf2eb0822da820c1c8 SHA-1: 9f0ab5bb475a22e252f9c5b49c4e1a17d81022cf SHA-256: 0e3a046565af02887b758a3418ab5a5f8b1520d71f28845cd8cc21d04b2e6bfb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The document body and extracted URLs reinforce this lure, suggesting an attempt to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are strong indicators of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9586

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/431946152/free-roblox-executor-no-key-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tiktok-free-coins_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-minecraft-coins_GM479516143.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
font_00_sfnt_off00005155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5155 25780 bytes
SHA-256: 5c1dbb1723ee84a93686a62f2d52b62de86cba9e14770684b68763a7c41be0a4
font_01_sfnt_off00008d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5C 8704 bytes
SHA-256: 39621d468ee1ea45cfd77c2a5e31c688636f452f9f0cc0d9213932d691ddc971
font_02_sfnt_off0000a9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C8 18372 bytes
SHA-256: dc47713ba6eb13f64d542fcf15a88c1c3b337790738a4cc5e94b1e08b5db33e2

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