Malicious PDF — malware analysis report

Static analysis result for SHA-256 870420fd090f12bb…

MALICIOUS

PDF

33.7 KB Created: 2021-06-26 09:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 31e776ceac5f88c32ecf7f3489458779 SHA-1: 5282b6cd4f776c5c6de9104bea158182ff96c48a SHA-256: 870420fd090f12bb45a49c32f3ec3d686192b474639de4a841afacfa487f8137
160 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The primary link, http://netcdn.co/app/431946152/how-to-hack-speed-in-dash-simulator-on-roblox-game-hack, is identified as a malicious redirector. The document body and numerous other extracted URLs reinforce this lure-based phishing attempt, likely aiming to deliver a secondary payload or exploit.

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.co/app/431946152/how-to-hack-speed-in-dash-simulator-on-roblox-game-hack In PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-robux_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/how-to-get-free-stuff-in-roblox-mobile_GM431946152.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.nonglong.go.th/ddd/UserFiles/File/mcpe-master-coins-hack-download_GM406889139.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
font_00_sfnt_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 21160 bytes
SHA-256: b2560a2198389e194ebb27b5d0f873028d467ceabfc30a8ad35f97af73a023c9
font_01_sfnt_off00005b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B78 20128 bytes
SHA-256: 5e15529212ef6605d2577c6dec2d19e9562c2cce051798ce93d9722f25718d4b

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