Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6a660d4451fbc9…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 01:51:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2f10834a1122ff1809a115aa0987d298 SHA-1: 048f413b721b52e0f2f3e0df3074b83e0ca78165 SHA-256: dd6a660d4451fbc99d69e090d2b4b4a177eeec8143aa18f7b8715cd2f34539cd
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF contains multiple links to redirectors and known malicious infrastructure, masquerading as a "game hack" lure. The document impersonates the Apple brand to trick users into clicking the malicious link, which likely leads to credential harvesting or further payload delivery. The presence of embedded URLs and redirector links strongly suggests an attempt to exploit users through social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/479516143/how-to-get-minecraft-for-free-on-iphone-game-hack.
  • 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.online/app/479516143/how-to-get-minecraft-for-free-on-iphone-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-2021_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_004_off00005249.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5249 24732 bytes
SHA-256: 43f45b0ef75001f30c5751c235cf73678d10ab15b473491503e0234a1d8d66c8
font_01_sfnt_off00008aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEE 18216 bytes
SHA-256: bed6c76176a434f358ebc88a31d2dbe88cb1547cd8758d4c9ade2f80066016aa

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