Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d88212e6cc7824…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 12:58:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 29fb933122c24f9e571d73d76af77aba SHA-1: d3ad1ed54d60093a487bc3daa9c457e107280ac3 SHA-256: 15d88212e6cc7824701530588a0b2c76e2d47fee6c8ab6b4af0d472d11a32cb2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirectors and lures for game-related hacks. The document body and heuristics indicate a clear intent to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirectors and the lure-based content 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/roblox-hack-to-get-free-robux-youtube-game-hack In PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-roblox-aimbot_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/someone-hacked-my-roblox-account-took-all-my-robux_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/hack-na-robux-bez-podawania-numeru-telefonu_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/cute-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/ww-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-sign-in-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/shirt-ash-on-roblox-free-on-shirt_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 22332 bytes
SHA-256: 523e995d12fdd8d40300a29c98b2ad621da15e6b700ea04f85142cc8f41451a6
font_01_sfnt_off0000634f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634F 19228 bytes
SHA-256: 63b5cd9123d83dc0046bc4bf20b5fd77b3980f2867bb5d9dd0787d4161ecf19d

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