Malicious PDF — malware analysis report

Static analysis result for SHA-256 272f94e84010f2ea…

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 09:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 98514ac7ff392cf148fadb851b10ece8 SHA-1: 5373474e88cf8d6b0ee230ec3b9cf38d82968ebd SHA-256: 272f94e84010f2ea5a4dc9faed4be0dccd29bfdc2687c158de61d99dcb0c01d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' to lure users. The document body and heuristics indicate a phishing or scam attempt, likely designed to lead users to download further malware or compromise their accounts. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/how-to-get-minecraft-for-free-on-nintendo-switch-game-hack In PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-2021-easy_GM431946152.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_off00004e54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E54 27024 bytes
SHA-256: 796794704f27b69d6d0ee7dff7d2ba21ffe317d917eb1cba375f9df9ee5ad642
font_01_sfnt_off00008970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8970 18212 bytes
SHA-256: f5fb374f4c57ea8e5b07667c881ff92ebdf307e1f7f4ca70019b2384515d6573

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