Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7cd32e6f5c7bf9…

MALICIOUS

PDF

42.9 KB Created: 2021-05-17 15:39:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 81ff60050f726545129236d16653151d SHA-1: 2b49a9e900b84d4ff4b5bb25397f9cfcdf93bd59 SHA-256: bb7cd32e6f5c7bf98f616e04309221ef617a6325915f4839e173ad89ad38a4f8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further support this assessment. No scripts were extracted, but the document's primary function appears to be directing users to malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-pet-treats-coin-master-game-hack PDF link annotation
    • http://asiashop-france.fr/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://asiashop-france.fr/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-get-real-robux_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_003_off00004e5d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E5D 24908 bytes
SHA-256: 0e38d06155e81a4dd6adb930b920c1f40c7b9569a337451159ac479fbeaa1451
font_01_sfnt_off000086d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D4 17864 bytes
SHA-256: 276a5511e926ade4da3bb644615f667fa3bbb56bd99d2adc923a65479c9a9e34

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