Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ed9ce0d2cc84af…

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 04:25:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: cc081cc5597a2091a2f3151d097d39ff SHA-1: c9e1afd85b5f6b235398828256f3cfcb3831f05c SHA-256: 11ed9ce0d2cc84af21f2f7dbd0f817d3dbe5fdfec796883cb3c108e89e8f5555
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free generators. The presence of a visual download button and the ML classifier's high confidence score further support the malicious nature of this document. The document's content and embedded URLs suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

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/431946152/free-admin-roblox-game-hack In PDF document text
    • http://kishplus.ir/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://kishplus.ir/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://kishplus.ir/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://kishplus.ir/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://kishplus.ir/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://kishplus.ir/images/50-000-free-spins-coin-master_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_off000049c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C9 25272 bytes
SHA-256: 7a8619bdc560a435c7417ceb64a047e8df6ef22da463851206f305e129cc5c7e
font_01_sfnt_off000084c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C3 18504 bytes
SHA-256: 830d3dec1a52b5677d0ce8f7274f803060246143ae3edd9314b7ddd4a581007c

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