Malicious PDF — malware analysis report

Static analysis result for SHA-256 c656dff56b5a8f87…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 09:42:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3bd1e3f9054fdece66a517aa1e7b6a9d SHA-1: 447bb239380ad172fa1a204e8a1ddca00477bd23 SHA-256: c656dff56b5a8f87bf3f0199db4fabcf05ac0fd8f4b18f905e4c4ca6d66e800a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple links that redirect to a malicious domain, masquerading as a game hack generator. The document body and embedded links suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/new-free-money-links-coin-master-game-hack In PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-fun-com-robux_GM431946152.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_off000047f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F0 24280 bytes
SHA-256: 810b541718f8daf37f4b562fcc6c6c84850fbf5eab7ebbed9a748018067d3af6
font_01_sfnt_off00007f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000894e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894E 18224 bytes
SHA-256: f61279c4473261222c708140308137155a35f7b52412648030a8269f43a1c894

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