Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a37753d78706353…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 03:05:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 67c330a0183a8b3f696212493efa2a8f SHA-1: bd0f66578f0f346f0ff7a4ae16dad7a05e8810f4 SHA-256: 6a37753d7870635340f31caa9a9b1f20e1b7f74c66972a12fe6f5d12837f32b5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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.xyz/app/431946152/free-robux-now-game-hack PDF link annotation
    • http://202.182.59.89/perpus/repository/hack-avatar_GM431946152.pdfPDF link annotation
    • http://202.182.59.89/perpus//repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://202.182.59.89/perpus//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://202.182.59.89/perpus/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.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
stream_003_off0000499c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499C 26800 bytes
SHA-256: b896f2ee1f4dba483debbdcd66928450a3ecfdac42b2547d2888df23d56891ec
font_01_sfnt_off000085c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C5 18180 bytes
SHA-256: 347d9824d8825d818282a285fba00b3bd41d7299fa84866cfa8bfb70561977b1

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