Malicious PDF — malware analysis report

Static analysis result for SHA-256 88cdadded78b70c8…

MALICIOUS

PDF

40.9 KB Created: 2021-05-14 20:45:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: baee2e128e58b7ae1a4d2a346b9f1ecd SHA-1: 705710684f714555c2f8085e13aa28421c76100a SHA-256: 88cdadded78b70c8183d6f09daec1ad84147285462a3009044123976ce555aa4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The presence of a call-to-action button further supports this. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest it's designed to redirect users to potentially malicious content, likely for credential harvesting or malware delivery.

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/479516143/minecraft-mobile-free-game-hack In PDF document text
    • http://ldjahorina.com/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://ldjahorina.com/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://ldjahorina.com/images/coin-master-viking-quest-hack_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
font_00_sfnt_off000048b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B4 23796 bytes
SHA-256: e491aa5c90164965edba735680a2c44d0b423491bf954a965121556d8f1bfdfd
font_01_sfnt_off00007e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E67 17944 bytes
SHA-256: ce10a2b2c496b69fcf76f31cd4916c063e1dd9befde4055646c3ea28f41e8e8e

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