Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4f7715527b6789…

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 07:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 460223a763eeceaecd11a0367293342b SHA-1: 04bda23c2f545f0d0fe3b05495ac9fde0c216cfd SHA-256: 5d4f7715527b678982b88aabe3351416368ccbd1632085fdcb9b102da2594691
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, including one identified as malicious infrastructure. The document body and embedded links suggest a lure for free game hacks or currency, aiming to trick users into visiting these malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/minecraft-bedrock-edition-download-pc-free-game-hack In PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/robux-online_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.businessgalaxy.lk/files/files/roblox-fun-com-free-robux_GM431946152.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_off00004b16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B16 28008 bytes
SHA-256: 96097893d2f2afefbce02a6fc7b0374fbad4942b03ead9deaedc76de60681ad2
font_01_sfnt_off00008937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8937 18828 bytes
SHA-256: 57b97413d46eb8dd02e8163e11e04ebb18f1b46f22b88b993c8d7eb158a8ca98

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