Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c113501e91fd6b9…

MALICIOUS

PDF

41.5 KB Created: 2021-05-19 03:17:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 51c94e23ef3797b6133863eb1886ef7a SHA-1: 2464d9d1e2c916c6f2ae2f503be30245b15833c3 SHA-256: 0c113501e91fd6b920bd3492a705dc91e201415ffce33e7005b54ed29f0b6f02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs, such as https://netcdn.xyz/app/406889139/coin-master-free-spins-android-game-hack, are designed to lead users to potentially harmful content. The document body and heuristics confirm the intent to lure users with promises of free game resources.

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/406889139/coin-master-free-spins-android-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/simplysarc_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/op-rewards-free-robux_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_off00004811.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4811 24596 bytes
SHA-256: 9ece0e879a314b7e2642fa102b133aa91de9890ee84fb986c87a7369e1eaf37d
font_01_sfnt_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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