Malicious PDF — malware analysis report

Static analysis result for SHA-256 013f2a43dbcd3789…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 09:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 71d17cd201f2b2a789a5924fa9ac7f40 SHA-1: 407ad1530cd8e0565bf3ddbe726c37eb22c57024 SHA-256: 013f2a43dbcd378954ccca3ec98744098e008ffa4118ccab85f018f9d5a2522a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to websites offering "game hacks" and "free generators," a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-hack-app-android-download-game-hack PDF link annotation
    • http://lookpaineis.com.br/images/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lookpaineis.com.br/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://lookpaineis.com.br/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d49.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D49 25552 bytes
SHA-256: 88f82dbe2a96c1bae1a72736477fc4a1f97a3bc21dfdda9fc436e9085be2fd68
font_01_sfnt_off0000889f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889F 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off000092ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92CA 18472 bytes
SHA-256: ce710c1ea70bd19d40b451a7d18c4a8a6d5bae3786b43e0834e6491f7024c8b0

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