Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ed9f28f30a803e…

MALICIOUS

PDF

47.0 KB Created: 2021-05-18 05:20:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a95755bd27faacc81049fd335693820b SHA-1: b6bd514e325d32a4ee98c946bad98acb5c1569b8 SHA-256: b7ed9f28f30a803e1482fe9dd7e3c1fe3e1173ccb7840c51f6a69caf6f9aaaac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to known malicious redirectors and lures users with 'game hack' content, indicating a phishing or malware distribution attempt. The embedded URL 'https://netcdn.xyz/app/431946152/rbx-hut-promo-codes-game-hack' is presented as a 'free generator / game hack', which is a common lure for users seeking in-game advantages. The presence of multiple links to similar deceptive content suggests a campaign to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/rbx-hut-promo-codes-game-hack In PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-on-iphone_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_off00004ad5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD5 28012 bytes
SHA-256: dfe47743c629fa77077a3183798c0d3f1435630cfd935ca8fa75d84b4bd26d00
font_01_sfnt_off00008ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE0 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off0000948f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x948F 18544 bytes
SHA-256: 3932e00da52bee9380420d38fb2034f39e9e0515dfd29b0dacfc54573cc91d35

Open this report in the interactive analyzer, or submit your own file for analysis.