Malicious PDF — malware analysis report

Static analysis result for SHA-256 402fe51030103c74…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 11:28:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 44dfadd5d6f5ccbd078493fbc2f3ea61 SHA-1: a1c4bf95fb97ff9a4c9d67a6c3e71abe8689d743 SHA-256: 402fe51030103c745e212814552ef26898adb3a739ca1b30a7c94ca05d64381e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a QR-code lure. 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 0.9865

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.online/app/479516143/minecraft-pocket-edition-apk-free-download-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pokemon-go-free-meltan-box_GM1094591345.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-roblox-promo-codes_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_004_off000052f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52F6 25016 bytes
SHA-256: 4a11379be5d88a477430a3c8d9989a81d801c7a399d2a34bc8f4e2c09a67d1a8
font_01_sfnt_off00008bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB4 18788 bytes
SHA-256: 367056a754561f937df838296582abd38218f74b4e704aecd9863e26c36099d2

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