Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a6b3fdfd455114…

MALICIOUS

PDF

48.9 KB Created: 2021-05-13 03:30:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ab547cac5752df974fbd2810277fffd5 SHA-1: aac0ccc3d9041a2b9dcbbc92c1a55e83b4297504 SHA-256: 80a6b3fdfd455114e67adbd0c4ca68ec700cfeb55cbfe5f9eb25b18a105be829
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free robux'. The document body and heuristics indicate a lure designed to trick users into visiting these sites, likely for phishing or to download further malware. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/how-to-get-free-gamepasses-on-roblox-game-hack In PDF document text
    • http://artistaone.co/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-today_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-minecraft-texture-packs-java_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AF 28380 bytes
SHA-256: cf7ddcf431ecd18ebe8f8af83d967e8cdae5e4fd54f051ee95ed2ea2a8bfb042
font_01_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 4660 bytes
SHA-256: b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816
font_02_sfnt_off00009af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF2 18880 bytes
SHA-256: fb511527e7af6e663a1f7c37f4b3a79e8b469c753c7cbc9de226132a948228f9

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