Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc1f9ee17d32eeb…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 22:48:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 743589df3653da1c4599de9e8a8c6f74 SHA-1: f744dd4a2328735ce497f733d6fed33045bd7cd6 SHA-256: adc1f9ee17d32eebb18e3ba9706a00556dd98f8f502ef564ff30589c51e82f19
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a URL associated with game hacks and free generators, a common lure for malicious downloads. The ML classifier also flagged this PDF with high confidence. The document body and heuristics indicate a social engineering attempt to trick users into visiting a malicious redirector.

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 http://netcdn.tw/app/431946152/free-robux-real-2021-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-speed-hack-script-v3rmilion_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/como-hackear-roblox-adopt-me-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-i-get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-exploits-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hacking-2-step-verification-for-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-tiktok-famous-for-free_GM835599320.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 22164 bytes
SHA-256: df74487246bf16cfe71697ceac80b868250e585cdf0c91f70fc244f86c61a35e
font_01_sfnt_off000062c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C1 19004 bytes
SHA-256: 69c7b802f35aaa538414dc961d4796759447f5b21bc6a5100dfc71e7189dfd4e

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