Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3348ab7af1e70cc…

MALICIOUS

PDF

34.2 KB Created: 2021-07-19 14:10:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2d5fb2e78bfcbac1c842946edc80235a SHA-1: 9374114e1f43ec2479f5026805dbabc8b096a7be SHA-256: e3348ab7af1e70cc6511cd600f0341bf24acd55dcead06bba6a0b3733ec02c11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising game hacks and generators. The document body includes a call-to-action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure. This pattern suggests an attempt to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9354

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.tw/app/479516143/best-free-minecraft-servers-game-hack In PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000029f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29F5 22200 bytes
SHA-256: f76d8e35410e19fd864bbd81b6d5ffc61cbf358b3616770595a3297243fa062e
font_01_sfnt_off00005abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABC 2812 bytes
SHA-256: fc92a80cefddbcc51cb4ecd7284aa73b746cbd66adcf1d96110f0323ec06b51f
font_02_sfnt_off0000645c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645C 17896 bytes
SHA-256: c529f757d6b4a4f9c7840ecb5b6035c813da3045ee3b560268268dab20db1aa9

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