Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dfb1fc6586787d…

MALICIOUS

PDF

37.8 KB Created: 2021-05-20 18:07:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 109f353012ab05f7d354fe86410c945e SHA-1: 785dd7895e414eda5de3c75bf83c7bbf7600fc72 SHA-256: e2dfb1fc6586787d89edde5c163c88ccaf0adb253eec7fa03041fd6bfe55a25a
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically promoting "Coin Master Hack" lures. The presence of a visual download button and deceptive text reinforces the social engineering aspect of this attack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirector chain designed to deliver a payload or lead to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-hack-no-survey-or-verification-game-hack In PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://aphb.or.id/new/public/ckfinder/userfiles/files/coin-master-gold-cards-hack-2021_GM406889139.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_002_off000034f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34F2 28012 bytes
SHA-256: 18eaaacfc5cfc6e1eef6c3e83698e85e76c6530640a3c6b77fcd430b03a6580c
font_01_sfnt_off00007255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7255 18284 bytes
SHA-256: 11bfbc115034705528bf6e10e44e61aa29d499e253164c4385166f501b43b311

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