Malicious PDF — malware analysis report

Static analysis result for SHA-256 5375fc7b5c9baece…

MALICIOUS

PDF

46.3 KB Created: 2021-06-04 00:37:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7f087b8c1353c1e315963b2ee7dd41ac SHA-1: 954e9219b5c1dec42bdedfe27446e451f63a8eb2 SHA-256: 5375fc7b5c9baece79375460285f2a65557c45f57174d4ae5ba5b1d807ab9887
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators to entice users to click on a malicious link. The link redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself contains the malicious redirection. The primary goal appears to be directing the user to a compromised site for potential credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/minecraft-free-education-game-hack In PDF document text
    • http://www.digilib.uim.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-robux-and-obc-pastebin_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/reaper-quest-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://www.youtIn 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
stream_004_off0000511c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511C 29320 bytes
SHA-256: aa940e799fe0fdaa10490ce3477e57f9b2db310cd9dbe448379cc973209d0108
font_01_sfnt_off00009352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9352 18024 bytes
SHA-256: bf17ed4b0ebdd3b4eae97da45cdc9952f927a0ef0c6480354077e4570e8b9627

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