Malicious PDF — malware analysis report

Static analysis result for SHA-256 271ce522d29409e1…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 11:11:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4f0d6cb58f6474e4ded23747b9ef7cae SHA-1: e146b203f9b371d2c0dd9f1579d3cd6c99cf6904 SHA-256: 271ce522d29409e11232f8a3b7d44891acd7c343fcca64b8e86689bce41ef17d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure, disguised as a game hack download. The document body and embedded URLs strongly suggest a lure for users seeking cheats or exploits for popular games like Roblox and Coin Master. The primary attack pattern involves social engineering to trick users into visiting malicious sites, likely to deliver further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/roblox-hack-noclip-download-pc-2021-13-feb-game-hack In PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-roblox-hack-youtube_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/tiktok-free-usernames_GM835599320.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/pokediger1-free-robux_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_off00002ae6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE6 22788 bytes
SHA-256: 83e91a36140a94d56b9fb5c270497aaa4044cf8de75a5bfbf4d3f4f218366594
font_01_sfnt_off00005de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE3 20352 bytes
SHA-256: 28ea3b99d972cce128f71e1b6fbf487d3c1d0605d92c223cac709e9f2844d382

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