Malicious PDF — malware analysis report

Static analysis result for SHA-256 455845971327ba2d…

MALICIOUS

PDF

121.9 KB Created: 2021-06-07 00:24:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 288e75a86c1738a50e83e69991953775 SHA-1: 259f1b6bb1570f7502764ee52508d8e48575633d SHA-256: 455845971327ba2dfddb6115fef4038684afffedafd2bcbeddd5740818b5c07b
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a common lure of 'free game hacks' to entice users. It displays a fake CAPTCHA, a known social engineering tactic to coerce users into clicking malicious links. The document contains multiple links, including one pointing to an IP address, all related to game cheats and hacks, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7605

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/431946152/free-quad-bike-roblox-bloxburg-game-hack PDF link annotation
    • https://schulzpressetext.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://schulzpressetext.de/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/pokemon-go-free-99_GM1094591345.pdfIn PDF document text
    • https://schulzpressetext.de/images/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/tiktok-free-view-iphone-5c_GM835599320.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3Eroblox%20bubble%20gum%20simulator%20cheats%3Cp%3E%3Cp%3EGet%20the%20latest%20Roblox%20cheats,%20codes,%20unlockables,%20hints,%20Easter%20eggs,%20glitches,%20tips,%20tricks,%20hacks,%20downloads,%20achievements,%20guides,%20FAQs,%20walkthroughs,%20and%20more%20for%20PC%20PDF link annotation
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3Eroblox%20bubble%20gum%20simulator%20cheats%3Cp%3E%3Cp%3EGet%20the%20latest%20Roblox%20cheats,%20codes,%20unlockables,%20hints,%20Easter%20eggs,%20glitches,%20tips,%20tricks,%20hacks,%20downloads,%20achievements,%20guides,%20FAQs,%20walkthroughs,%20and%20more%20for%20PC%20(PCPDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00018011.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18011 25380 bytes
SHA-256: ee297b3e46e8e3086d661f2c09297fbe27ea3bc50b1a9e01f12b747a71f9b256
font_01_sfnt_off0001bb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB29 19228 bytes
SHA-256: bb2a248d905ffb91dc035af0e04b778811c23ffc12fd89bebbee5b903f589904

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