Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7f2bf1854a2945…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 05:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2c10032995b81450c0c385da72e0d88b SHA-1: e914542a0f5f5c6e2183bba3129917ce325d0e53 SHA-256: 3a7f2bf1854a294550aac40290f12a70bd06f1aeb6489ba7c7b3275c856cb5c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body, though heavily obfuscated, contains references to the same URL. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-play-no-download-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-4l-tiktok_GM835599320.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-hacker-us_GM431946152.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
stream_004_off0000546c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x546C 26392 bytes
SHA-256: a2d1de6f9d03a6a20b328895ca68eec0d0cc98d43fdb4269f8a89971deb4b471
font_01_sfnt_off00009045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9045 18624 bytes
SHA-256: fbb9b780a0bb14823a54994ffd1331078a17861a297534d48eb4e2856c7fc06d

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