Malicious PDF — malware analysis report

Static analysis result for SHA-256 a04688b9f2e9134c…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 03:58:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c9c3c3fc05e911bab7a2f7d15945529e SHA-1: e8974d3884819bcca7ea253cb4b3c23044f5101e SHA-256: a04688b9f2e9134c3327eab39d7969f4a8363a5d827f5e4ca86f58fc2c913a53
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising a 'free generator / game hack'. The document body, though heavily obfuscated, contains a reference to a similar lure. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring the user to click on a malicious link, likely leading to further compromise.

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/free-card-link-coin-master-game-hack In PDF document text
    • http://ivpr.net/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/original-roblox_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/give-me-robux_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/oginject-co_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.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
stream_003_off00004660.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4660 26420 bytes
SHA-256: bb92553850febdb81feb58c66dac28d371631191df5303df6e27275814b3aa6e
font_01_sfnt_off0000821c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821C 18056 bytes
SHA-256: cfb6ded867a7642321d4c76c2efd56b2991136bc968f29bb898a65be3c453579

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