Malicious PDF — malware analysis report

Static analysis result for SHA-256 2471614ffac92b83…

MALICIOUS

PDF

48.6 KB Created: 2021-05-14 22:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1f34ee08c36e6409e972761c45dc86fe SHA-1: 3e007c4e18bb3a006acc8ed2c9d4a1f7a09d202f SHA-256: 2471614ffac92b83355721f16d3221dbcdc20320bd68bf18cc52a929092bed1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks or generators for popular games like Roblox and Coin Master. The document body and embedded URLs confirm this lure, directing users to potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/roblox-free-play-no-download-game-hack In PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://learningmts.pondokyajri.com/__statics/gudangsoal/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C51 28268 bytes
SHA-256: 2df11c9459c46cfc9001192102808259473fa8da009618d18921d16e2b0f0105
font_01_sfnt_off00008edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDD 3112 bytes
SHA-256: 471f662098e83c5562504503f5e7603b336ca0957605358090bb98e15c7aed80
font_02_sfnt_off00009996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9996 19016 bytes
SHA-256: c08b0bfed4549b0a018fdd65c7ecfbabaaf271df113fe836b296c7344acf0339

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