Malicious PDF — malware analysis report

Static analysis result for SHA-256 328a0a406d4819bc…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 22:37:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3f3b0cf8e1a917f41c78a4e2dd498ad5 SHA-1: 126a31d4a2da0a19ade480672dd67174d383ea63 SHA-256: 328a0a406d4819bc9a44ed8244e669abb3615b1cf6b20244d374cc98f8e27f75
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 0.9507

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/coin-master-gold-cards-hack-2021-game-hack PDF link annotation
    • http://libertad74.com/images/robux-2021_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://libertad74.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://libertad74.com/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://libertad74.com/images/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/impact-minecraft-hack_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E6 25408 bytes
SHA-256: fe43be7dbe27f921f7360ef9cf83591c9cf5b743c0992e2bdb3af8da6171046b
font_01_sfnt_off00008437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8437 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off00008e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E62 18364 bytes
SHA-256: 25adfc3027f21b1e38f42a07395fd323d291e4477c7e958d1480243ffe9b6b95

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