Malicious PDF — malware analysis report

Static analysis result for SHA-256 013f2871c0e25046…

MALICIOUS

PDF

43.8 KB Created: 2021-05-18 02:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af9d39385216183e543bc20d8168c1d6 SHA-1: d035cffb03fec8ebc73d07ffb24e72e2a1a82262 SHA-256: 013f2871c0e25046f19e53ebbc5fe47792bd00409abbd9e90a92c76d0d3b22a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external resources, masquerading as a 'free generator' for a popular mobile game. The primary lure is a link to 'coin-master-free-spins-and-coins-haktuts-game-hack', which is hosted on known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for phishing or malware distribution.

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/coin-master-free-spins-and-coins-haktuts-game-hack In PDF document text
    • http://inextpresident.com/images/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004968.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4968 30476 bytes
SHA-256: 7940d59dfed79997ae650172ae13a6dc1cdfc79e9cad53654fe940e1fcf8e61d
font_01_sfnt_off000088ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EA 18372 bytes
SHA-256: 1374fd06713d40a81e458f274f3407aece0ce4f3746b7111d66dc7260bac3a40

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