Malicious PDF — malware analysis report

Static analysis result for SHA-256 d949544db6ff251c…

MALICIOUS

PDF

49.1 KB Created: 2021-05-17 15:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 83c8fe6c4119b478cbc90e71325fa6d4 SHA-1: c4c64673321e22e5e174b0f5a0aece8137b5405d SHA-256: d949544db6ff251c07b415ec33d6e7a40b68a3b97033bc3b816c9b9e67bbf031
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures for game hacks and free currency. The primary link, 'https://netcdn.xyz/app/431946152/is-there-any-way-to-get-free-robux-game-hack', is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/431946152/is-there-any-way-to-get-free-robux-game-hack In PDF document text
    • http://pwpyemen.org/images/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-2021-free-spins_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000496f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x496F 30032 bytes
SHA-256: a9303be9491717b99c2f0e88afc7ec932ffb4f1cbe5b6c74ad1365d3b798439b
font_01_sfnt_off00008d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5D 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off00009be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE9 18892 bytes
SHA-256: d4b621edf5ac5f073c5a65dd804db4f1f2ad13c123c1b5ace541ce5f5c284f58

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