Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bfeeee9fbcbe56…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 16:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4da72b29f3bbde063157755421b5eae9 SHA-1: 52a8901630905f52e60911407aad96dee0da2826 SHA-256: 27bfeeee9fbcbe5680d2cf60b4053982f3a4bae9bc1b89e3357aa35c841e4f9a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering 'free generators' or 'hacks' for popular games like Roblox and Coin Master. The document body explicitly contains the text 'CLICK HERE TO ACCESS ROBLOX GENERATOR' and a URL pointing to a malicious redirector, indicating a lure for users to click and potentially download further malicious content or be redirected to phishing sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/robux-come-game-hack In PDF document text
    • https://tena-g.hr/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/instantrobux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-el-tiger-card-free_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_off000047ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EC 26508 bytes
SHA-256: db8e28833554b2a281a2938e06f1dc8eb6ca4de67802b6ca20d9a47d9aa6e364
font_01_sfnt_off0000847c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847C 18108 bytes
SHA-256: 23b39d788b4f94a358d85c543858153ed4c8a930a2b4b33f7e22821f7bb08b5c

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