Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e5452ea7940852…

MALICIOUS

PDF

46.1 KB Created: 2021-05-17 08:33:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 159728cd5d108d906e19d61818c9fb43 SHA-1: 0a86160f1dcefde982477bb946d20c6adc61f043 SHA-256: 54e5452ea7940852db635c0e4ce9365910ace7895fa8494793baa8b42e3963c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically targeting users with lures for game hacks and free currency. The document body, though partially corrupted, contains references to these lures and embedded URLs. The primary function appears to be directing users to potentially harmful sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/coin-master-links-free-spins-game-hack In PDF document text
    • https://laconce.com/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://laconce.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://laconce.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://laconce.com/images/coin-master-free-spins-glitch_GM406889139.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
stream_003_off00004e21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E21 25380 bytes
SHA-256: 70b64d8bbe54caf7df2832b99facc490b4c85abe75048a5552372d1961e0ed25
font_01_sfnt_off0000875e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off0000923c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x923C 18056 bytes
SHA-256: 95118de0f1fa2d9d8d6d34d7ce9f6e9c56d43c25fce4d2a4bd556d275959b9e0

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