Malicious PDF — malware analysis report

Static analysis result for SHA-256 47db9e4842534abf…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 01:23:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 3defd3e28c47dc56df9e9cb3dc2719f8 SHA-1: 0c716108bbeb1e695021c68172d051ddbb81e84a SHA-256: 47db9e4842534abf3204678ca5badf65afda1f42edb1c871c9be7511659d9c52
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to a known malicious redirector infrastructure, disguised as game hacks and generators. These links likely lead to further malicious content or phishing pages. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the overall structure and linked content indicate a phishing or redirection campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.tw/app/479516143/universal-minecraft-converter-free-game-hack In PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-how-to-cheat-on-fantom-forces_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/eliot-ring-mig-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-hack-almost-any-game-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/this-you-cna-do-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/noot-noot-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/hack-para-roblox-dragon-ball-z-rage_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/press-one-button-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/comment-cheat-sur-roblox-dbz-final-stand_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-no-hack-no-download-no-survey_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-pro-hack_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
font_00_sfnt_off00002f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F09 22104 bytes
SHA-256: 77751bed4c7d2fc4dbb18c2844ec33d9f273782235023fe243e94841bc037b7b
font_01_sfnt_off00005ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFA 18372 bytes
SHA-256: 7d318ad6347a4557b0fba1c54e9227a7af1ff8e9321d667927090105f213260a

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