Malicious PDF — malware analysis report

Static analysis result for SHA-256 1102794d57f7b4ee…

MALICIOUS

PDF

36.7 KB Created: 2021-07-05 13:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: edd3b3f93b6b205508830b60a3061472 SHA-1: 66c6134de367d291aef3aad667813f0c3bb41556 SHA-256: 1102794d57f7b4ee3970a5a7a0e2a000ead4dd6c50ec2271c9e817633beb119f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users into downloading potentially unwanted software or visiting scam sites. The primary lure is related to 'Coin Master Hack Apk Download 2021', suggesting a social engineering tactic to exploit interest in free game items. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-apk-download-2021-game-hack In PDF document text
    • http://elibrary.perludem.org//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-armor-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/bloodborne-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-roblox-to-get-lots-of-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-recieve-instantly-no-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-win-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-dump-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/download-roblox-hack-for-pc_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-item-going-limited-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-free-legit_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-health-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-cheats-deutsch-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cool-free-roblox-characters-uu_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-hack-script-impact_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
font_00_sfnt_off000036e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36E7 22896 bytes
SHA-256: 6978b98a90e468da7b35c0d3c88599fea202839c4862a53fd0aaa055b1b7864b
font_01_sfnt_off000069e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E4 19160 bytes
SHA-256: 74154339b294d6feca0152a4072c83326c1fc7d9ddb702fdec28eb90277bbd47

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