Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7a0cf2bd01c4f5…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 23:24:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7adfb6ee713b623a8cf0cee570c0bc3b SHA-1: f66f974d396887c49266c836e6a89c3be3560c3a SHA-256: aa7a0cf2bd01c4f53824d2fa92c838465b367d1357d559723919aabb783e0b15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and free in-game currency. The primary redirector URL is https://netcdn.online/app/406889139/coin-master-hack-app-ios-game-hack. This indicates a social engineering lure designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.online/app/406889139/coin-master-hack-app-ios-game-hack In PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000506e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x506E 25696 bytes
SHA-256: 8648619afa56e054975659477200079a7097b0d301d1aa866ee4ce071dc01f2d
font_01_sfnt_off00008b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0D 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000094f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F8 17892 bytes
SHA-256: 842ebafe75553617aa3406336693b508b1df3cd42ae030bb56c7cc7ab7429b4f

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