Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d1cc444497a0a5…

MALICIOUS

PDF

41.2 KB Created: 2021-05-16 21:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ebfd39f02de8be78cc49dc7e15c3ec7a SHA-1: 204738169d006dc365f425346c6ce2a829860c9c SHA-256: 15d1cc444497a0a5d623441d905a13ec08809d481ceb83898b7586ca31f605b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. The document body and embedded URLs suggest a lure related to game currency generators, a common social engineering tactic.

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/how-to-get-free-spins-and-coins-in-coin-master-game-hack In PDF document text
    • http://sbm-nn.ru/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004861.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4861 24176 bytes
SHA-256: 61a0f721a4231d2547a996b1a39e603f97054e636778324eddd6119bab35f214
font_01_sfnt_off00007edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDC 18224 bytes
SHA-256: 1a177d96c25f70e29c96d18ff08cc0e48255fbbd4539b1ca90a782c549603dc1

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