Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ea8a8d412f4120f…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 02:36:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: a9cdea123cf789edbf592dd275da1e45 SHA-1: 8b13dba7fc531641ceddddeab7e0a1be18b2a412 SHA-256: 7ea8a8d412f4120f927973bc79e3da03b12785dbe49eb48fbce5f27bf90b9771
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector. The primary lure appears to be related to 'game hacks' and 'robux generators', suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/block-best-robux-game-hack In PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/main/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/can-i-hack-coin-master-with-lucky-patcher_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_off00004a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A43 25764 bytes
SHA-256: 52c27bd2f05343aef13e52a24944c814997236136a2e8198a4f0f69987a40018
font_01_sfnt_off000084b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B8 18196 bytes
SHA-256: daaabad6ab6022bda6900dabddedd47967e3de0560a218c263fb5add1c96f29e

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