Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1975d7b280aacd…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 18:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 969cf61d54920b8929d8a23b0d582af1 SHA-1: 2ff52077331e12762006549500df46936477a0f2 SHA-256: ed1975d7b280aacd452d4f8d2a6cfe636cac9fcf2b9843494617bb3cd7a086ae
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, that lead to sites offering game hacks and generators. The document body explicitly mentions 'free generator / game hack' and provides a direct URL to download a Minecraft APK, indicating a lure for potentially unwanted or malicious software. No scripts were extracted from this sample, but the embedded URLs and the nature of the lure strongly suggest a phishing or social engineering attack.

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/479516143/minecraft-pe-016-0-apk-download-free-game-hack In PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-get-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/mc-update_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-et-robux-for-free_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/cheat-codes-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-not-used-october-2021_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/robux-hack-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://class.maniclotim.sch.id/__statics/gudangsoal/files/2021-free-roblox-accounts_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_off000030d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D1 22592 bytes
SHA-256: 841da5cad413fbf2d30583783cbae3c05a0e0b9d7a5e4dc0ee55cc9fa1c4ce6a
font_01_sfnt_off00006365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 19524 bytes
SHA-256: 2c1b2724e9f8d24eaf424e37f542e22724de6abfb49ca65165bfe174736ddb84

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