Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d56210bab3541e…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 05:18:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c4856ae68a7ce313e148086f7f70dbca SHA-1: e8c25ea1194d96fe055cedb584a208fd00aa2dd8 SHA-256: 22d56210bab3541ec1db3b2d0e2d8123f1fc7fef7f096484cc4780b11b2cdc22
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 partially corrupted, indicates a lure for 'Minecraft Story Mode Free Download'. The presence of embedded URLs and the ML classifier's high confidence score strongly suggest a malicious intent to redirect users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-story-mode-free-download-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/robux-generator_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-coin-app_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hack-coin-master-apk-32_GM406889139.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_004_off000050e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E6 25312 bytes
SHA-256: 850a511c02c3d5b7d0ab2927d2d0367bc994860e28c47c1725824c0b3c2910d8
font_01_sfnt_off000089de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DE 18468 bytes
SHA-256: b60985c1befe233451c1e4628b3545798255342bb86f0eafc92eb610c8c57488

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