Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1970e90c833ecab…

MALICIOUS

PDF

40.8 KB Created: 2021-05-19 21:19:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 03b2487a3835e85105f95c239016b934 SHA-1: e425243c7a6e2e0f757c89ab5439f88d06502a86 SHA-256: e1970e90c833ecabaf6a7bb67bb32ffe7c5ada2b5a6e00576e0acdc85400ba66
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and known malicious infrastructure, specifically targeting users interested in game hacks and free currency. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a lure to download further malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1330123889/pubg-uc-18-game-hack In PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-link_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-roblox-accounts-dantdm_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004616.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4616 24156 bytes
SHA-256: 8a0e600ce7adf9e55ecc0914bc9e4a5b194a274b3a6b07ad0dcc4e2a8b6b9b99
font_01_sfnt_off00007d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0C 18216 bytes
SHA-256: 3ba249d4db2240dc37e885e16fbfb195cb9f08758afdbaf0a4ce797a49bc81d1

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