Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe03f1da92736989…

MALICIOUS

PDF

47.6 KB Created: 2021-05-11 02:43:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b2a325dd9f67f3116238bab34a8a9309 SHA-1: e5c901698f02a0463eb17c90f20a78a6bbae07b7 SHA-256: fe03f1da92736989d30b3adbc7bde125b2538d44a40bbc468174435ecc3a56ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-today-facebook-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirector designed to entice users to click through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/406889139/coin-master-daily-free-spins-link-today-facebook-game-hack In PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/simplysarc_GM479516143.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C23 27572 bytes
SHA-256: 8da5cba371ef97ae9c3779e0b1330b8135c8412db22e880c40140cf09c782d25
font_01_sfnt_off00008afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off000095dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DD 18808 bytes
SHA-256: 4857649f58737dfd5d3cde565af8420aeb724b61b1648601542f846ee8275f41

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