Malicious PDF — malware analysis report

Static analysis result for SHA-256 68029a1fa174c882…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 14:02:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d1ba1278c2dfffd6f9fde8875cdbaf2e SHA-1: aa7440c90a8a01590a2c3166f4386319ba1f3ba0 SHA-256: 68029a1fa174c882b07545160269827f1e4bf8a53f00d5d1e48dcbe1f8b2816e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/robux-for-kids-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/robux-for-kids-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/woman-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-spins-in-coin-master-without-human-verification_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
stream_003_off00004941.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4941 24040 bytes
SHA-256: aa9dcd771953a2a7a25eab305a8b0618ac240aab3fc08ae842c5c3a25c00c79b
font_01_sfnt_off00007fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEF 18308 bytes
SHA-256: 8a34bf7029799339b91ee5bbc9e7150d15a201a0a283206b71f5bacd63347ffe

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