Malicious PDF — malware analysis report

Static analysis result for SHA-256 1908187ba379222a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 06:22:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 248f96b99cb3b9981b2b3ad0c7043698 SHA-1: e9608588d9bfec928a5c5ef1193a69fe350db14b SHA-256: 1908187ba379222a1f48fef222d0ad9d447cf8c1aa4ae583855ab2dd4121bc02
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 0.9980

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 http://netcdn.co/app/431946152/free-robux-generator-com-roblox-hack-game-hack PDF link annotation
    • http://collectionsuncovered.com/media/storage/editor/files/mediafre-roblox-hack_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/red-boy-v2-jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-cheat-way-up-volacnoe-wood-tycoon-2_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/grab-robux-for-free_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-match_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-spins-on-coin-master_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
font_00_sfnt_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 22684 bytes
SHA-256: 6c024448a1e4f3d8697c10f38b49897b9a81532dbf9ac424a417d00490281efa
font_01_sfnt_off000062e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 19324 bytes
SHA-256: b5fe64a349a1260a8bf1e39cb434a35d84e03f20b24c2703f62dd6d7df3547b9

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