Malicious PDF — malware analysis report

Static analysis result for SHA-256 b10edc1f8bf824b2…

MALICIOUS

PDF

38.1 KB Created: 2021-05-25 06:48:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b322df6564ac5c1a3d1ab22576828be SHA-1: 70e366a70572bdcd4b1ba54ade6be4991f1d24c5 SHA-256: b10edc1f8bf824b28cc0e8179e3252e9a0b2e9b00ae49730121d5ed9a30e6614
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and lures users with promises of free in-game currency, indicating a phishing or scam attempt. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/free-coin-master-coins-game-hack', are associated with known malicious infrastructure. The document body and heuristics confirm the intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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-coin-master-coins-game-hack In PDF document text
    • http://brokermortgages.com/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://brokermortgages.com/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://brokermortgages.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://brokermortgages.com/images/roblox-premium-free_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_002_off00003393.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3393 24548 bytes
SHA-256: 49a3d8d3413b82509dffc752b741d5e6dfe6b79868f10f8fc62b7c058bcb63bb
font_01_sfnt_off00006b4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000074fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74FE 17712 bytes
SHA-256: effefb876c7a76aa063811ff0160e46fb8a90dd5507c6c48ef6fa39823ab5c8c

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