Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5a0f0e2c4515c9…

MALICIOUS

PDF

36.8 KB Created: 2021-06-28 23:10:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 80583b09601b6233198621654f804602 SHA-1: 6d82cfd666ee6863111828ff1865738fe3622370 SHA-256: 7c5a0f0e2c4515c954872cb0ca9af19cd9719f94b333fdc64c64d7de995c53cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded URLs strongly suggest a phishing attempt to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector chain designed to lead users to potentially harmful content.

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.co/app/431946152/how-to-get-free-robux-no-hack-2021-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/bux-gg-roblox-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-roblox-account-ebay_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-items-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-muscle-legends-cheat_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-obby-meaning_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000370c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x370C 22588 bytes
SHA-256: b6f48f13f3de30878ff1bf9a73ca8d4e9f76e6fadae739da423fd7fe69a45681
font_01_sfnt_off00006932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6932 19556 bytes
SHA-256: c1641066dd249adb043c97113370405541ecd03bc5532b36e6631bba007e96f8

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