Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a2e7217b2ee9a4…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 18:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 958547974247ffc2c6ac2af53e9ec28a SHA-1: 0f2f3c21d2a59c50383a61d34c0dc71de2c49408 SHA-256: 45a2e7217b2ee9a466761b5f960aba012d807aecee935f4824d2ad2a724d86c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, specifically advertising free game hacks and currency. The heuristic firings confirm that the PDF links to a malicious redirector and uses a lure for game hacks. The document body, though partially corrupted, contains similar lures and URLs, reinforcing the malicious intent to direct users to potentially harmful content.

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-robux-obux-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-face-mask_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cafe-on-roblox-studio-milkshake-set-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/admin-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/magitan-hack-keeps-crashing-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/best-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-with-nothing-just-pick-amount-thats-it_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
font_00_sfnt_off00003124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3124 22652 bytes
SHA-256: 46e5b21bbec7d0455c62ec0872e4fe1d21dbf9ff0c15b52623273bdf58cd4f96
font_01_sfnt_off000063a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A5 18716 bytes
SHA-256: 0fd58eb3c17931f1185c0ba7fb75c04e164ed764458fe65480ebc84b6e55d88a

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