Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b29b132403cdd0…

MALICIOUS

PDF

57.3 KB Created: 2021-05-11 12:35:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 5499e22c9e4a893d42bb7e0be580a176 SHA-1: 5892f58cfda0840e1a3f5c812ad89c4987e41291 SHA-256: 62b29b132403cdd03b753007fb9ff0728d586f0def3d898cd5c009f6282eb7b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free spins" to lure users. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to drive users to a compromised site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8284

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-free-spin-27-game-hack In PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/mcpe-download_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C4B 30436 bytes
SHA-256: 4095fba3a18171fc4a6de606cc9dcc52eea3006b14e31653febba6d458165ca5
font_01_sfnt_off000091b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B7 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C82 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000afa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA8 18064 bytes
SHA-256: e5d4af430e647cf7cb0e22ed46cbaed1bc4db951ce3e04e592ed76e802cdb32e
font_04_sfnt_off0000d115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD115 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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