Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2c403dcc6239f16…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 21:27:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 02eb1722231eaa2f84db3dc74f4ccd3b SHA-1: e738ad7e0b01f593eba5fa7d3407798baee9f70b SHA-256: b2c403dcc6239f160819616f79c6284cc5fa2c3a8a0811ae3fa1cca8f98b6772
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free in-game currency. The heuristic firings indicate that the PDF links to known malicious redirectors and employs a game hack lure. While no scripts were extracted, the document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/406889139/how-to-get-free-spins-on-coin-master-without-waiting-game-hack In PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-get-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-spins-and-coins-coin-master-2021-link_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_off000051f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F8 25784 bytes
SHA-256: c44ba5f772cef148a0b5343352be7d1a5b57f0a41d3dc5217562b02c5fa93813
font_01_sfnt_off00008c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C00 18844 bytes
SHA-256: 74e90038a15acf9d59ef996dfbbccefa77ce85bd889c53575e7537e702976194

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