Malicious PDF — malware analysis report

Static analysis result for SHA-256 afce0e67b68f41bc…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 01:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5bb0c464b29d4c41e6ea85f3568d09fe SHA-1: bd7fae86f29fbb02b005bff1a30d40ae7e317de3 SHA-256: afce0e67b68f41bc3c97fafa9d9dd02a370d7b9c4983091b3d0becc219aa6532
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that are identified as malicious redirectors, specifically targeting users interested in game hacks and free in-game currency. The document body and embedded URLs suggest a lure for downloading potentially unwanted or malicious software related to popular games like Minecraft and Roblox. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a phishing or malware distribution attempt.

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.tw/app/479516143/minecraft-116-apk-download-game-hack In PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-hacks-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pokemon-go-free-clothes-code_GM1094591345.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_off00002fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB9 22572 bytes
SHA-256: 13f2c3dc37f1e8c95fbac492f40d945fe7c205f06c7033c36b8cc8aef9e0247f
font_01_sfnt_off00006235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 19196 bytes
SHA-256: c560919f5898ddcb6f276f798e8d6256edb9177e477aa84821c6e6e049caf03f

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