Malicious PDF — malware analysis report

Static analysis result for SHA-256 2120c6033db1fc0d…

MALICIOUS

PDF

44.1 KB Created: 2021-05-18 02:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 918d203717af44ad7987c2f500590685 SHA-1: 38261c9adddb531dffbc6a7b9382937620b36f04 SHA-256: 2120c6033db1fc0d182fe68b09aed2d5b4ca73b8ef67c2db835c5100c02847d0
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 0.9976

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/free-robux-2021-no-human-verification-game-hack PDF link annotation
    • http://edelektronarzedzia.pl/images/_GM479516143.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/robux-games_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://edelektronarzedzia.pl/images/coin-master-free-spins-cheat_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_off00004b10.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B10 26708 bytes
SHA-256: bba38e18f0449508c7e2c006683ddfae1cc8a9e4c5011128245ebe23c70e3d06
font_01_sfnt_off00008756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8756 19260 bytes
SHA-256: a5b009a33d06eb91b5687aca452054299973906144ac3f9b2fc2dd0e2fef1dac

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