Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe25323ba23e7ae…

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 09:04:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 409e2fa99fd7a1cf2f75467f6499a9ff SHA-1: a01a80b967faf269ade461e2c14234d388476964 SHA-256: abe25323ba23e7ae9dcbd079f61b7ddca0f80f994b2b88c2d6d1775ddcc20e96
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' or 'free generator' themes. The document body, though heavily obfuscated, contains a URL that aligns with the heuristic findings. The presence of a 'password-protected archive' lure suggests the document is intended to trick users into downloading and decrypting a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/get-free-spins-on-coin-master-no-human-verification-game-hack In PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.man2kotaserang.sch.id/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-bc-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.man2kotaserang.sch.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000531a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x531A 24420 bytes
SHA-256: 9d7e241bfff2f2d527b01e12df74ea7e75563ce606c5e1bac6b98e6b32e06934
font_01_sfnt_off00008b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B78 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000952b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952B 18420 bytes
SHA-256: aaf073635ea6c22c09bb96c4932f7cf7a5897db2b80a5630abe18a56f2e635cd

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