Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9bae926a4e9ba2…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 05:31:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 42112cb5797ad66dd54ec06e5f859608 SHA-1: 2f2ed0ef7894c09cf929b90272c663c5973a38bf SHA-256: ab9bae926a4e9ba2b94f00c568e796cf270adf8258289ff9d7f9cd1889a08560
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks or free currency, suggesting the primary goal is to redirect users to potentially malicious content. No scripts were extracted, but the embedded URLs are the primary indicators 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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-verification-2021-game-hack In PDF document text
    • http://lib.unar.ac.id//repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://krnl.rocksIn PDF document text
    • https://www.roblox.comIn 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_003_off00004a58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A58 27664 bytes
SHA-256: 9d944446b62fc777494bcebbd4f5eb7e94863b454edfbe18182c5f986463ff0a
font_01_sfnt_off00008a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5F 19528 bytes
SHA-256: 1b346556c7df455cb9a54b8f1a6e3f1a0bfffa2d9228fa0640c35d2bdb9db684

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