Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f532cd9d9d9666…

MALICIOUS

PDF

42.3 KB Created: 2021-05-12 00:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8263f751715e10fe286341adfdd422db SHA-1: 195818f0ca7bd73301dfe81d692b98ac3bc6ff47 SHA-256: f7f532cd9d9d96666eb4e4072804c82f3a90da97636c4059081ec63f44ef41de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free currency generators. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links indicate a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-blogspot-game-hack In PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/free-spin-coin_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://elearning.man5bojonegoro.com/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B16 24280 bytes
SHA-256: b1293b247eb244fda27f3e58e5e3448b92658f2b92174a0b2166ec7da47d0d9a
font_01_sfnt_off0000828f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 18464 bytes
SHA-256: 3d1506adb004325b5ad849f11167115e1f90dbd1428f7e6d98779d75984a0c30

Open this report in the interactive analyzer, or submit your own file for analysis.