Malicious PDF — malware analysis report

Static analysis result for SHA-256 b093cbda9c9a13a7…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 06:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a990b08297828e9cb52288d4a8f94c02 SHA-1: ab985f8ffa5e88a431a087eeee8892f31beec702 SHA-256: b093cbda9c9a13a7fda66ea4f3c7d4b6f9fb26b626309bd89d9db9107c52378a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to websites offering game hacks and currency generators, identified as malicious redirectors. The document body and embedded URLs strongly suggest a lure to trick users into visiting these sites, likely for further malware delivery or phishing. No scripts were extracted, but the presence of numerous malicious links is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/play-coin-master-for-free-game-hack In PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pubg-uc-not-received_GM1330123889.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/speed-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e15.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E15 26544 bytes
SHA-256: eaa632405842de2dc5df5d90e064af72f4777389357c090e89305c8c1d4c5f0c
font_01_sfnt_off00008b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8C 18116 bytes
SHA-256: 37b7c1d52da71900fe96da67641d66084da59d3226ff1799d5ac51fdc9d2defe

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