Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd287ad042ec785…

MALICIOUS

PDF

44.0 KB Created: 2021-05-19 09:21:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 21fb6874b3cc35e14895e3d5b9a439b8 SHA-1: 74f4ad1e76be7d49f4f8e551226266ac4e461f7a SHA-256: 3cd287ad042ec785d3b4aebe49013f7b2f1db0e7c8f2b01dd4579d6259fb93a6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and game-related lures, such as 'free generator / game hack'. These links likely lead to further malicious content or exploits. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-hair-roblox-game-hack In PDF document text
    • http://tehergumi.hu/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/woman-roblox_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/hack-client_GM479516143.pdfIn PDF document text
    • http://tehergumi.hu/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://tehergumi.hu/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://tehergumi.hu/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/robux-win_GM431946152.pdfIn PDF document text
    • http://tehergumi.hu/images/coin-master-heaven-free-spins-today_GM406889139.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_off000049ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EA 28252 bytes
SHA-256: 25b000a1155e25f8b157ee2eef9c95a079cc4fe9185887826d77d32abf4c3028
font_01_sfnt_off000089c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 18296 bytes
SHA-256: a0599e440df83d1220524ed19e510b9c2f6a3db0fbd0aff9e889db947f6eea7b

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