Malicious PDF — malware analysis report

Static analysis result for SHA-256 f38421c40b5b70de…

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 16:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9c5925c173bb89c8a54fb26fa620c4cb SHA-1: a356f7a01118ced9bf32e192e03f46c80311dd4d SHA-256: f38421c40b5b70de9b55c3ba894331d8ca416dedf8b315ed37faa4c94951a7e4
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 0.9912

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/431946152/how-to-get-free-robux-without-verification-game-hack PDF link annotation
    • http://electro-nrg.com/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://electro-nrg.com/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-master-hack-without-verification-for-iphone_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://electro-nrg.com/images/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://electro-nrg.com/images/robux-download_GM431946152.pdfIn PDF document text
    • http://electro-nrg.com/images/hacks-to-get-free-robux_GM431946152.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_002_off000045e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45E1 27036 bytes
SHA-256: aff67d94a8c8dba463570937606dc0c44cdcfc8358f60a8fc4ed4a86b2e37960
font_01_sfnt_off000082ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82EA 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9B 19128 bytes
SHA-256: fe2fba94a2d86c9c71a87afecb14f9f9cb432365285dbf62d8027955010708b1

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