Malicious PDF — malware analysis report

Static analysis result for SHA-256 d37bfda65886ce73…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 12:40:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c26a943f3550a6f1ec18d1aaaeb6aca7 SHA-1: 30e714a3ee7366c91c42e1973927d1b5972b15da SHA-256: d37bfda65886ce7377c797b1ceb92b815eec4813a985cc28daccce479ec530eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirectors and the lure strongly suggest a phishing or malware distribution campaign.

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.co/app/431946152/roblox-cheats-on-girlfriend-game-hack In PDF document text
    • http://global-brand.net/userfiles/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-real-hack-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-roblox-bear-mask-wear_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/hack-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/new-code-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/best-free-level-7-executor-free-for-roblox-2021-august_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-no-verification-no-survey_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_off000032b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B8 21920 bytes
SHA-256: 6240e288b371d277eed53add4e7bf9ef708f461334e28e157394b8b9f1e585c0
font_01_sfnt_off00006316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6316 19048 bytes
SHA-256: 9c110d75a7e022322a05170d0dee02be0c4bdbc9916295f4efc39d1b4262f2b1

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