Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ecc272e89468cc…

MALICIOUS

PDF

44.8 KB Created: 2021-05-13 17:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a8ad85b002930ab77fb0a327db387e1e SHA-1: 30f7e448a0dcb347e0180315488b6ef4be5fc751 SHA-256: 82ecc272e89468cc3b9c4234b2aa3b6f81cf273943a4364ddf23b6930e3be6b8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

The PDF document contains multiple links to redirectors and external resources, masquerading as "free generators" or "game hacks" for popular games. One primary link impersonates Microsoft, suggesting a credential phishing attempt. The document's structure and embedded URLs indicate a lure designed to trick users into clicking malicious links, potentially leading to further compromise or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9653

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-stream-game-hack.
  • 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-robux-stream-game-hack In PDF document text
    • http://www.eptaviation.com/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-without-human-verification-2021_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FB 23880 bytes
SHA-256: 4ae828cddd061603591f1815620a74c2ea32f0fc49ec546926cb6cd86b8946b6
font_01_sfnt_off00007e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E45 4036 bytes
SHA-256: ae05a8cb47e13f22abf98e8ab8c05d01ad4598e4b7983d2ac121bd1d71d2d5cc
font_02_sfnt_off00008b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B92 18608 bytes
SHA-256: d58c1050c241e8596ad00b07d95ef71c6ad75f8aac12cbee34afc6366c1e008e

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