Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ead7e2d8125ee24…

MALICIOUS

PDF

43.9 KB Created: 2021-05-11 17:06:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 19db0641102b40854c822874093dd528 SHA-1: 026f5b2ec70d96b470961a8471cb0c444cf1b058 SHA-256: 9ead7e2d8125ee24dac693c597da4ce5c1018f546ab433edd80cf947b8d52d99
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links that point to known malicious redirectors, specifically designed to lure users with game-related hacks. The primary malicious URL identified is https://netcdn.xyz/app/406889139/como-hackear-coin-master-2021-game-hack. The document body and heuristics indicate a lure for 'game hacks' and 'free generators', which is a common social engineering tactic to drive users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/como-hackear-coin-master-2021-game-hack In PDF document text
    • http://global-brand.net/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/freerobuxhack-us_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_off000048ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AC 28916 bytes
SHA-256: 006ad858cfb7c7506a7a8df417787b9ea6662efe86bcb9864413c732546fa992
font_01_sfnt_off00008936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8936 18380 bytes
SHA-256: 7d079b1918a151c222a156c250c5aa0e1b0afb08b6f17fdb7ccf3df79397c72b

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