Malicious PDF — malware analysis report

Static analysis result for SHA-256 7068d67cb4faee00…

MALICIOUS

PDF

46.2 KB Created: 2021-05-11 04:17:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 26dea15dcf20af6ea92d043a3a537257 SHA-1: 6a48ce4f0d8bd3ff3bf6b8ec5c94f7ffbaa2b68c SHA-256: 7068d67cb4faee00e75b3860468bc65ee90a794ac93debc5dafd252f06c1d6eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, specifically targeting 'Coin Master' and 'Roblox' cheats. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended for ad fraud or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/how-to-get-free-spins-coin-master-game-hack In PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux_GM431946152.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000051be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BE 24360 bytes
SHA-256: 20b9e6ab5e2d317dcddb595279972dacca9956b2f19839c6905778c3577ab94c
font_01_sfnt_off00008942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8942 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000092f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F4 18052 bytes
SHA-256: 3cfae0e628493b06a11893ba870a091d0c1d4835c1ebffdd70b8f2a1c7d637a9