Malicious PDF — malware analysis report

Static analysis result for SHA-256 43d0e54c059a7bea…

MALICIOUS

PDF

44.0 KB Created: 2021-05-15 14:44:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 28a41477e5ab31d8cf31bd494b02742c SHA-1: 456ae526e4f18bbebd07a6a00e89eebaa7f7934d SHA-256: 43d0e54c059a7bea35ddd545be7fa6ffc35dbf5c113c5edaed29008c7581aa9d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a prominent link that redirects to a 'daily coin master game hack' lure, indicating a social engineering attempt to trick users into downloading further malware. The ML classifier also flagged this PDF as malicious. The presence of a download button lure reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/daily-coin-master-game-hack In PDF document text
    • https://socialvalue.gr/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://socialvalue.gr/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://socialvalue.gr/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://socialvalue.gr/images/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000477a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x477A 25116 bytes
SHA-256: 743bddea84d2afb7fba6b5e6187c5db9c43200cf3b1b27334e5ee8f617f3c384
font_01_sfnt_off0000803a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803A 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 17968 bytes
SHA-256: 88a0d731d7b381574a006ca944c17241aad840c2b11367d7b1a0c0a64bb163ce

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