Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7848e8f22148df7…

MALICIOUS

PDF

35.9 KB Created: 2021-05-21 00:25:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1dd86697d651502c9e4cd3be002e1f2a SHA-1: 30cab659ca345655ebbce5f81c0c2c52ce052f5c SHA-256: b7848e8f22148df7a85537f9e3199fe41d132ed4e3a57ba4c51a66c930791600
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 0.9648

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/479516143/how-to-get-minecraft-pe-for-free-game-hack PDF link annotation
    • http://d-cision.nl/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/pubg-uc-hack-season-9_GM1330123889.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_off00003376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3376 24624 bytes
SHA-256: edb6b0f5e58f34f2593db763e8d9cdc4961bf9731dba32ac114618bb770b38ce
font_01_sfnt_off00006bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 18028 bytes
SHA-256: 3ed4cc32a3614fc42f77637b5226aac8e96d41a1bdab71d116d218547dfdfc35

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