Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4048f93590c86c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-17 19:52:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 580afb349cd6b0df11aa1d78ec330dc8 SHA-1: 2cd2c0f45b9d8ffed5c9bd2e2f7917b97dba4ab2 SHA-256: 1f4048f93590c86c3bd43ad55c9aa9281d8af40069c59ff51d3fad06c65a0076
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free accounts, which are common lures for malicious redirects. The heuristic firings confirm these links point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the document body and embedded URLs strongly suggest 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.co/app/431946152/free-week-old-accounts-roblox-game-hack In PDF document text
    • http://amcoeur.org/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-hacking-kazuin_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/code-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/hacking-roblox-with-brutus_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-does-people-uses-hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-do-i-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/hacks-for-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-generator-script_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/free-tiktok-fans-and-likes_GM835599320.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_off00002dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAB 22828 bytes
SHA-256: 1c76f462a98d95cbd46684453b5f4bb1657ced0582706e14ba8c403c218d89c5
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 19252 bytes
SHA-256: 43345cad7371fbbfa59dc88d298a43e67e58a7164ca06af014c3c568cdb6b3c9

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