Malicious PDF — malware analysis report

Static analysis result for SHA-256 af870ce316462ba1…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 21:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9958b552366cad6fcc01bfae0f667dd1 SHA-1: 5234924464e45815cb088793fc7590919befac37 SHA-256: af870ce316462ba104f28b2f8b9bc0dda770aae639d90fc3500cfe2e16658021
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary malicious link redirects to a known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a redirection-based attack, likely intended to lead users to phishing sites or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-coins-2021-coin-master-link-game-hack In PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/robux-come_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/wurst-client_GM479516143.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
stream_003_off00004b57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B57 25912 bytes
SHA-256: 6153bac31ac913b2f79eb4d3d77515ecdccceba49439bebcb3823eae3ae537d9
font_01_sfnt_off00008687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8687 18284 bytes
SHA-256: 44e7f09bb3e55560ed6b3e28d1dba29242186833d4e458deb15a61ccc134217c

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