Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26fcbca24b3bc95…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 06:41:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 452517436e237a6fce67ce9dddfd3a28 SHA-1: 6718ffb57ad5e402e49f079756e0b800333f4ab5 SHA-256: d26fcbca24b3bc95886659463cae39e9194340c69ef36245bf99d8d874e33c6f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure related to game hacks and generators, directing users to external URLs. The ML classifier strongly indicated maliciousness, and the presence of multiple embedded URLs associated with game cheats suggests a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and linked content point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/1094591345/free-pokemon-go-joystick-2021-game-hack PDF link annotation
    • http://g3galileo.com/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DB 24112 bytes
SHA-256: ab118d09ca62ea27eb9e894d428c40f0f9283e2137995f9bb95eaf348d41fdf5
font_01_sfnt_off00008091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8091 18812 bytes
SHA-256: 6e3f79f06d41ace1b3a47003183b32c008ff365c7397cb5c5f8a27cc4a3e4585

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