Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d918c68572e1582…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 07:54:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 29cc24e1e5e27f7e7b99793af8bafc26 SHA-1: 9e944421c925fad9ac350d50ec9733a35db67d15 SHA-256: 3d918c68572e15826d13eb3100bb19e215b5b7e8cb25b266f41e8fd249b7f719
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 0.9824

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 http://netcdn.tw/app/431946152/free-robux-giveaway-live-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-lumber-tycoon-2-how-to-get-free-land_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-bc-hack-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/be-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-free-hair-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-sword-art-online-burst-cheats_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-an-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-hack-working-100-with-proof_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-robux-group-funds_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-sif_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-33-hack-version-download_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
font_00_sfnt_off00002aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA5 21484 bytes
SHA-256: 9b50ada2f646fd3212a7ef4cd33de98662d9a7c38c2383ddc8b4faeb1bf56cb4
font_01_sfnt_off000059dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59DC 19296 bytes
SHA-256: 0352292dbcbf26e7fc0de087e3b3baebc7cf90a2f8a47f67a80d89effc18d76e