Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9b1ebc4c99c205…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 11:38:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c845d9771ae8feb4d431c3329d26576 SHA-1: 7e0d7cd77a3fe8ee7847e9dcaedae241ab74f012 SHA-256: 1d9b1ebc4c99c2056ded8c3e5f5f81546eda1a36eade7e388633e30a74bf6ef8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The document body, though heavily obfuscated, contains references to 'Coin Master Pet Food Hack' and includes URLs that are likely part of a phishing or malware distribution chain. The presence of multiple redirector links strongly suggests an intent to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-pet-food-hack-game-hack In PDF document text
    • http://ivpr.net/images/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-coins-coin-master_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_off00004b64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B64 24768 bytes
SHA-256: 46c13acd9747508ba545bae5e9e63ea6f59376d0a6b918fa3f2556348a1da526
font_01_sfnt_off00008414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8414 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFE 18208 bytes
SHA-256: e18efbdce36ef150d5aaea8ad3152999d2cd8d64b44f09ee0731d2d38d7a34d6

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