Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ee1badcba148fb…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 06:41:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3f5c21a82ea9e4ca3cb263718ef99040 SHA-1: 631b22e807b33260da21bdb00ec1ef44850c0490 SHA-256: b1ee1badcba148fbfc4d8ddb6419b2a37c76cffd45785468b19fa095d0e6a7fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a "Coin Master Hack" which redirects to malicious infrastructure, specifically `https://netcdn.xyz/app/406889139/coin-master-hack-100-working-game-hack`. The document also contains numerous other links to potentially malicious PDF files hosted on `elearning.manpaba.sch.id`. The presence of these links and the redirection to known malicious infrastructure indicates a phishing or scam attempt.

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/coin-master-hack-100-working-game-hack In PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/www-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.manpaba.sch.id/__statics/gudangsoal/files/moon-active-games_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_003_off00004a19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A19 23328 bytes
SHA-256: 19fbd48cec085e0525585a4c55dd519aea9505928fe50f4823b70b2b4908cfb3
font_01_sfnt_off00007e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E61 18480 bytes
SHA-256: 08e8391c69bd521e699d78070ea8eb7eb0a5cf154e7740c19edaf501220ff0c1

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