Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9363d49e15e5cb…

MALICIOUS

PDF

54.9 KB Created: 2021-05-11 14:59:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f0ad3329b1e745ef935f004f6bff3892 SHA-1: 8318c531da66a2d4bf23cd778fd17fad1b9d668b SHA-256: ea9363d49e15e5cbdfa6c35fa07f361fbe1f8b3bf93644b7b80276c8cb3ed326
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users to websites offering "free generators" or "hacks" for popular games, such as Coin Master and Roblox. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack aimed at driving traffic to potentially malicious or scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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/coin-master-hack-ios-no-verification-game-hack In PDF document text
    • http://mbbs.hr/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-level-3_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-points_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F2 27180 bytes
SHA-256: e14a2740af14464b0eaa19cd691b77286462df6452def76d477a5354b1497a0d
font_01_sfnt_off000088f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F3 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000093be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BE 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a6e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E4 17848 bytes
SHA-256: 48c9ce01aec35091000860b85626b98eacdea209ae15a3e9e76324e561a73743
font_04_sfnt_off0000c7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AF 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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