Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc223c6d15ca13f…

MALICIOUS

PDF

47.3 KB Created: 2021-05-14 00:41:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a8e007f579d83bfc45f8681ddef31755 SHA-1: 140064a2325f5f15f9ec3db130977056321d1a69 SHA-256: edc223c6d15ca13f92f427aa30366b230f5db9edb0e687db746f1703697e04e6
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 0.8948

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.xyz/app/431946152/get-free-robux-info-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A76 26864 bytes
SHA-256: 45928970d9eca421c7db9500b22513c667d2ebfe7eebd021008ebb9b163654e7
font_01_sfnt_off00008942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8942 4008 bytes
SHA-256: 515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593
font_02_sfnt_off000096cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 18120 bytes
SHA-256: 6e6e8bb7c0e640fc67837f70826b1bbd381eb05acf75ec047415621944091573

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