Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cdda9c8624f9f71…

MALICIOUS

PDF

45.0 KB Created: 2021-06-04 03:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0123971366f1d24f7934bda9f70db752 SHA-1: a91cdf1bd095a2932670f4bdf1d78e125697e6ad SHA-256: 2cdda9c8624f9f71ce5c80bc0f4acd0e20e56f4fe047f0095a049538be998553
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, masquerading as a 'game hack' or 'free generator'. The document body and heuristics indicate a lure to click these links, likely to download further malware or lead to a phishing site. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious redirection workflow.

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/coin-master-70-spin-link-today-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000525f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525F 25680 bytes
SHA-256: fdd3b6dc9571dfce94ee08110253a39594e4c9c652527e61f3021645220d2eeb
font_01_sfnt_off00008c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C98 18472 bytes
SHA-256: a3b16dd292719d3d3db8fc4f556ffe5ac43d4d3177a11b2b95197a9a65896a05

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