Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba45a7d26346bfc…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 05:04:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 90d1b4e1675607145e4af35f5afc601a SHA-1: ccd5c17415b5c72540f71ef528d37f056e7dae21 SHA-256: dba45a7d26346bfcfe3306f9ac4624b04438bfe8e775c05d0911c8c8a7b702b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users with lures for game hacks and cheats. The document body and heuristics confirm a redirection workflow designed to lead users to further malicious PDF files hosted on anlathich.com. No scripts were extracted, but the PDF structure itself facilitates the redirection chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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/free-coin-master-spins-2021-game-hack In PDF document text
    • https://anlathich.com/public/upload/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://anlathich.com/public/upload/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • https://anlathich.com/public/upload/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://anlathich.com/public/upload/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://anlathich.com/public/upload/files/working-coin-master-hack-2021_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_002_off00003355.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3355 24196 bytes
SHA-256: 83eea7376b4a41f8d1504d6c0a4f470d36c8dafbb1cf798720d87f834f76c7c3
font_01_sfnt_off00006aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABA 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000746b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746B 18288 bytes
SHA-256: cbf21fc5c11f74798808ab0cc71af5e4bf323ced5a050f8983f0748b8c809d88

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