Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c8f044dd67f98b…

MALICIOUS

PDF

43.7 KB Created: 2021-05-14 18:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 75ba184239f92cff2cf9a47b2888e419 SHA-1: 931f88431935d316bc5abb17e32fc29d7935a0a8 SHA-256: c7c8f044dd67f98bf413fe86fe03210454e8d2f8f741f56801effec8760a681b
200 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The presence of a fake CAPTCHA heuristic suggests a social engineering tactic to trick the user into interacting with the document, likely to initiate a download or navigate to a malicious site. The document body and embedded URLs indicate a lure related to game hacks and generators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-hack-version-game-hack In PDF document text
    • http://technologicalsc.com/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/apps-for-free-robux_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_003_off00004cf7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF7 26720 bytes
SHA-256: 8852202d13ce75f0f96bd975cc2fc0496d2b22476aad74487001b201c28a845a
font_01_sfnt_off00008994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8994 17848 bytes
SHA-256: 2729ad92b050e6dc35a280ba208d99b8f0446e6618424513f217a7b9cdaff54a

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