Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4c175337c60b5b…

MALICIOUS

PDF

58.2 KB Created: 2021-06-03 09:45:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6afb7d64dd8dde04dac511ba7d2eea4e SHA-1: 3771b025a988268960f8c8cfff2070fe3971645e SHA-256: 8c4c175337c60b5bfc6557d7d21a3113594bbbb8c4ba43960286f6b870833bfe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "game hacks" to entice users to click on embedded links. The primary link directs to a known malicious redirector, which likely serves as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites, aligning with a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9612

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-3533-android-hack-game-hack In PDF document text
    • http://library.stikessuakainsan.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/tiktok-free-tools_GM835599320.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-coin_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/cheat-undetectetble-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/minecraft-for-ps3-free_GM479516143.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005379.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5379 27852 bytes
SHA-256: 466ddfe5a79b9e80cae055dfdf69997c76e30bc5afc19e167cfe8262048b4615
font_01_sfnt_off00009454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9454 3088 bytes
SHA-256: 21947db80f63681192ff4d23c9293372afcdd8455d0079c5ca62ec2c2320d79e
font_02_sfnt_off00009f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1F 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000b244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB244 18196 bytes
SHA-256: dcb33034cc58ce1217dbd5b6274ede2fc62df16ef41450d00994050c1588cc7c
font_04_sfnt_off0000d435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD435 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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