Malicious PDF — malware analysis report

Static analysis result for SHA-256 75818991eae75cb4…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 05:14:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 29db164b71262ea8b7e86b2593a3ea06 SHA-1: 01a116deef79e955d81893bc72ad8c4b811be8d7 SHA-256: 75818991eae75cb4cfb84b4b9540f3df3d03226460dfae1236b2463548c5d484
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. The embedded URLs and the nature of the lures strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

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/406889139/feb-23-2021-free-coin-master-spins-game-hack In PDF document text
    • http://asiashop-france.fr/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/minecraft-tower-defense-hacked_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/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://asiashop-france.fr/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://asiashop-france.fr/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.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_off0000483b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x483B 25144 bytes
SHA-256: 44c66088054b33dbb0cedf2c0705b464d5920bd234aeda5fa0db449fd4ee00c3
font_01_sfnt_off000080cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CB 18620 bytes
SHA-256: e4df661a92880538668b358c87f5272d6176bbf79a36016d2a0b4349a414f314

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