Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4580da9d7573e1…

MALICIOUS

PDF

46.4 KB Created: 2021-06-10 22:08:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 66f174a8db4adb23f2cefbad1fe2ba72 SHA-1: 312131a789f742eed8d4ff6ba7f7317e96c9c9a0 SHA-256: 1f4580da9d7573e197131fcd4520f6c1abd517587a723d0b7ee44c69816cefc5
82 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 0.9832

Heuristics 4

  • 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.
  • 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.tw/app/431946152/pokemon-card-free-robux-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pubg-uc-rate-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-assassin-hack-knife_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-hack-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/master-coin-free-link_GM406889139.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_004_off0000519b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x519B 28552 bytes
SHA-256: 54ae136e37e2041042523531ae5d486cd57b11e205ad4be5b81cfc8524b0cf9c
font_01_sfnt_off000090dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DC 19000 bytes
SHA-256: 234d6b615c5d773d1487389adefa0a2c6281fb4b613730a6073a992d8c5c057b

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