Malicious PDF — malware analysis report

Static analysis result for SHA-256 350f9cdb162aeb98…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 09:08:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a5efaf0642144db8f0a7ec3bfc98a39d SHA-1: 460094a585c01a540a024a9cc9ff252a39e17990 SHA-256: 350f9cdb162aeb98b83b561a5b09ee3742c1339c18c52980725713c5b3f1bc3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-link-game-hack, which is flagged as a known malicious redirector. The document's content and structure strongly suggest a phishing or scam attempt to drive traffic to potentially harmful 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/406889139/coin-master-link-game-hack In PDF document text
    • https://deutsch-study.com/image/data/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://deutsch-study.com/image/data/files/toolbox-for-minecraft-pe-ios_GM479516143.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_off00004ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC4 25004 bytes
SHA-256: 740ea6544394ae64f1536a9c6477f1406ba060b7206f906b3ad4b0e7d4074823
font_01_sfnt_off000083d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D2 17716 bytes
SHA-256: 6b6be525affa70ffc107ac4c88dd9d04ef97920621a7989faf1a85e6391895c0

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