Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae1af7d7b069ff9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 01:57:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 669ad2b76a908845ee1bf0654d59d5bf SHA-1: 7f23e7a6cd34a5f7ad802394484be4bb30c8f855 SHA-256: 0ae1af7d7b069ff97ec7eb3b402a4a8d3bb316c767d6565bde5aa74ba813bf3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to a "game hack" generator, identified as malicious infrastructure. The document body, though partially obfuscated, contains references to game hacks and URLs, reinforcing the lure. The presence of these links and the heuristic firings strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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/431946152/strucid-aimbot-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-pokemon-brick-bronze-cheat_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-pbb-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-www-com_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
font_00_sfnt_off0000332e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332E 22192 bytes
SHA-256: 478060d2bb65f41b9f4647a8f7b741fd7552d90f1c446f1cca3a463674974642
font_01_sfnt_off00006491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6491 19000 bytes
SHA-256: 7aa7d3638efe39ce201bced34717b630daade6b493ca12c61c93c4a944a6a2d2

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