Malicious PDF — malware analysis report

Static analysis result for SHA-256 5118b826c67a1bc8…

MALICIOUS

PDF

53.0 KB Created: 2021-05-11 02:34:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 14c703aca94953065db16d43c086723a SHA-1: 7b9f235fe6b5316179ce50f312395857dad8ed8e SHA-256: 5118b826c67a1bc811e52adfe7d60e84a7f88e956501cad2a80484cfa3342d05
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8701

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/oprewards-points-generator-game-hack PDF link annotation
    • http://miriammcconnonart.com/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/robux-link_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://miriammcconnonart.com/images/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490C 32052 bytes
SHA-256: 808ca1b04a033c3d01446c1a36fef5719509b2362050c68a433e32f46d5e84c5
font_01_sfnt_off000090a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A7 2824 bytes
SHA-256: 45bf821f81e84f4aa8d8374f492b182b36404f38b462c7dc471deaad6ab5c104
font_02_sfnt_off00009a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4F 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_03_sfnt_off0000ac32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC32 18464 bytes
SHA-256: 1f8e609d6837fbe9d541e60b2038981984e2889c8e8d6f72a613ebd55477316c