Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47b9368e12778ff…

MALICIOUS

PDF

41.4 KB Created: 2021-05-14 21:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2c4f6bc30e3c96518121c6897082aab5 SHA-1: dc2291ccb81c7aeffacc1556e181b2860172a3f6 SHA-256: d47b9368e12778ff57277167a92e73e202132dfed08dedcc70ff26b65534fe8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier strongly indicated maliciousness, and the embedded URLs are associated with redirector activity. The document body, though partially corrupted, contains references to these lures and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-daily-free-spins-and-coins-2021-game-hack In PDF document text
    • http://jdlrealty.ca/images/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://jdlrealty.ca/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://jdlrealty.ca/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://jdlrealty.ca/images/coin-master-gold-cards-hack_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_003_off00004624.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4624 24172 bytes
SHA-256: 96b7e17b5a11798bad05bb9714ce0023d887792ab0d52779e8576cc15b6b4c96
font_01_sfnt_off00007d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D57 18884 bytes
SHA-256: 183333dfce930995a9382150b407cb528e1a5d3dc22f511d9bca322a4b29e614

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