Malicious PDF — malware analysis report

Static analysis result for SHA-256 1721e1007538d4df…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 04:05:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b40c4f0507a5d5ab266df1ca1b5c4161 SHA-1: 7f3df4bdb61027626b789d34bb8a8a942fa6cdf1 SHA-256: 1721e1007538d4df18feb01b437d4032b284d25c5710900001645be0d3861628
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains multiple links, including one to a known malicious redirector at 'https://netcdn.xyz/app/431946152/easy-how-to-get-free-robux-game-hack', which likely leads to further malicious content or malware. The document's structure and embedded URLs suggest it is designed to trick users into visiting potentially harmful sites, aligning with a phishing or scam campaign.

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/431946152/easy-how-to-get-free-robux-game-hack In PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004822.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4822 24996 bytes
SHA-256: e8ee3629ca67eb1e66681c07c11b8ec7393b13c0fa8669817ff99259722cc57e
font_01_sfnt_off000081ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81ED 18688 bytes
SHA-256: c2d85703cc6a1447500036b33f7ea43eb33cd1174df43eac9260fbff62206025

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