Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62f8d6abad896bd…

MALICIOUS

PDF

46.2 KB Created: 2021-05-16 08:29:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f93135594c282fa4931f28379b6a47ad SHA-1: 7ae9d32981c044c36f7620855d21d30a7d572660 SHA-256: b62f8d6abad896bd2d72887e8fc0d2ebc0b9e237756cb0dd5886ffb421549b15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free spins. The primary malicious link identified is https://netcdn.xyz/app/406889139/master-coin-hack-mod-game-hack, which is associated with redirector infrastructure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to drive traffic to potentially malicious sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/master-coin-hack-mod-game-hack In PDF document text
    • http://dieter-sauter.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/actual-free-robux_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c78.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C78 25228 bytes
SHA-256: 5eeec8995f820e928bc978db1ed19d55581da1af775fc903e96e044f8fbd8c39
font_01_sfnt_off0000867e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867E 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00009304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9304 17888 bytes
SHA-256: 79663f5c6e364485b04b83db578590d29b6e1ee38eddb5c45b054f63581374ad

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