Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fac813c82a7a7d0…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 05:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7271354e0f45497676d08a5937b5fef8 SHA-1: 98db3974b02afefe944f50b8f58640d1416332a7 SHA-256: 2fac813c82a7a7d0c0a0e1b1c729dbb82d7cdb40fbdb96a1cdfd09eb1cc4d088
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and generators. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a lure to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/coin-master-hack-download-android-game-hack In PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-any-time_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/pokemon-go-free-yellow-egg_GM1094591345.pdfIn PDF document text
    • http://tileworld.com.au/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/original-roblox_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-no-verify_GM431946152.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_004_off000053cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53CD 26176 bytes
SHA-256: a4fe732d4fc02c188351b60fc0d1d9a93235d7843f98a4e4896da9e16051d6c2
font_01_sfnt_off00008ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 18296 bytes
SHA-256: 191b71f27c87c49ec840916d543df80ed5baa55fcebbf61f3d10def48a18baf7

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