Malicious PDF — malware analysis report

Static analysis result for SHA-256 288b1bf08db2491f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 14:59:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8329ca3d16e1c603c24a9967d53f8471 SHA-1: 4f208014de2e867850617332e7fe6af53009c8ff SHA-256: 288b1bf08db2491f982464937fe04c6d463d72aef269930a14811f4390d0c1ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and free currency generators. The document body and heuristics indicate a lure designed to entice users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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/who-to-get-free-robux-game-hack In PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-skins-download-free_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-app-download-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-hack-all-game-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/roblox-artmoney-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stikesindramayu.ac.id/repository/free-coin-master-spins-and-coins-for-daily_GM406889139.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_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 22536 bytes
SHA-256: b785e839c4c35836de047fc66d5a7e753d35a89e520152c9b2b8cc4ea71e2e6a
font_01_sfnt_off000061e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 19184 bytes
SHA-256: 8d240f683c5a5d51cb605f4b06df9d271b22e3bf7dc4e657cba8cc5b4ea7a16b

Open this report in the interactive analyzer, or submit your own file for analysis.