Malicious PDF — malware analysis report

Static analysis result for SHA-256 726aeb835f5d505f…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 23:14:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a207d7a2849bb45fb3a382f2e04838b6 SHA-1: 979036fe5e21c8c320264e56574242c05d48c4e3 SHA-256: 726aeb835f5d505f69e5e43e6f0e2e65da681263f3cb45431377b1b99a33d628
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and cheats, such as 'coin-master-hack-mod-apk-2021-game-hack'. These links are indicative of a social engineering lure designed to trick users into downloading malicious files or visiting compromised sites. No scripts were extracted, but the presence of numerous malicious redirector links strongly suggests a phishing or malware distribution 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-mod-apk-2021-game-hack In PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/cheat-engine-roblox-deadzone-remade-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/spin-hack-pastebin-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/tiktok-free-movies-site_GM835599320.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-speed-hack-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bandung.sch.id/__statics/gudangsoal/files/roblox-hack-site_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_off00003344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3344 21840 bytes
SHA-256: 5d60e270ca57e798b638cca24c8eb299ae0df76d6582654258528ca75dfdc87e
font_01_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 18756 bytes
SHA-256: a597e2a1a6313d69caaefc0fd9e6b3b52d3816ecea07cbaeac835cf7e101dd2a

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