Malicious PDF — malware analysis report

Static analysis result for SHA-256 2310cb9ac445bf75…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 03:32:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 9bc487c589166b5a768ee4863ee6b557 SHA-1: 93170356261fcf7050ca1df172b251822cf2d544 SHA-256: 2310cb9ac445bf75e7c39acde63f02b727b6260e21edcacd9ba149d830ce9b26
200 Risk Score

Malware Insights

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

The PDF document contains multiple links to external websites, including a known malicious redirector, masquerading as free game hacks and credits. The presence of a fake CAPTCHA heuristic indicates a common social engineering tactic to trick users into performing actions that could lead to further compromise. While no scripts were directly extracted, the overall structure and heuristics suggest a phishing or lure-based attack aiming to exploit user curiosity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-roblox-credit-for-free-game-hack In PDF document text
    • http://www.ma-plast.hr/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-apk-hack-32_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_off00004aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEE 25152 bytes
SHA-256: 8225f08451dd1fd78cc91b7ab3f666256c8c49e77396ac7fe0a9d74f572931b8
font_01_sfnt_off00008420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8420 18508 bytes
SHA-256: aaee93be15afea3f34265028f72e14c8d8177a28a7e511fa9958eeec3e94f784

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