Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebec9935f2aab196…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 10:25:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1510641f64fb629599707359efe9fc0c SHA-1: 20c6d1767dbf455ea57db92df5cf1035d92eb474 SHA-256: ebec9935f2aab196939731c99ee4bf07818e9e947b0ce8cd117331f4f0c73281
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising free game hacks and accessories. The heuristic firings indicate the PDF is designed as a lure to a malicious redirector, likely to download further malicious content or exploit vulnerabilities. No scripts were extracted, but the presence of redirector links and the ML classifier output strongly suggest a malicious intent to trick users into visiting harmful sites.

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/free-accessories-roblox-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/serverside-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-account-with-2021-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/wls-3-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-shirts-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cb-ro-hacks-skin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-tiktok-likes_GM835599320.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_off0000305a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305A 22384 bytes
SHA-256: 224be08a71a67c5ab870fa841c3f0cd16ca081a76033a9955ceda3ce23b94b9f
font_01_sfnt_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 18768 bytes
SHA-256: 0bceb8a8dc7ef29793148dfd9dee48c7d10a17c2b63897691a01a60fe989334f

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