Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd699bd200388445…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 15:52:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a1acd80692dfb2b750eb69413183826a SHA-1: af99c4a0718f03057e7aec3ee040ccb8da6563f7 SHA-256: cd699bd2003884454aad7d85f17f0d2fad0b9f669c0bc1885771957a1673195b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and embedded URLs strongly suggest a social engineering lure to trick users into visiting these sites. The presence of embedded URLs and the nature of the lures indicate a likely attempt to deliver a secondary payload or phish for credentials.

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/406889139/free-coins-and-spins-coin-master-2021-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-execute-script-hack-download_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/como-usar-tesla-roblox-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-tay-k-roblox-shirt_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-robux-site_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-roblox-veichle-simulator-hacks_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/buy-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-999999-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-cute-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-redeem-code-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/spped-hack-2021-november-for-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-roblox-loot-bags_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_off00003391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3391 22616 bytes
SHA-256: ee6e6a47b8830d82ca49a1c225dfe43f0bef1c8a35a0a99d03aa2c28f43d0bbd
font_01_sfnt_off000065fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FB 18752 bytes
SHA-256: 2808497b37fc1d4f34a1fffc3dd5e81983cd3403e98677a9ba5497e95ebc42c8

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