Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aff58452e12ec18…

MALICIOUS

PDF

47.3 KB Created: 2021-06-04 00:29:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f3bb82c960fb8128c822ae1f60ddb010 SHA-1: 99b774a5611a63b3e898e80905065e067bbd95ec SHA-256: 0aff58452e12ec18f77a60601de6c9ae64b41d73dc7f89d593b696492191ebbf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free spins, directing users to a known malicious redirector URL. This suggests a phishing or social engineering attack aimed at driving traffic to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/legitimate-coin-master-free-spins-apk-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-code-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-airpods-tiktok_GM835599320.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/blogspot-free-spins-coin-master_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fe5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE5 25900 bytes
SHA-256: b0590d1f25e92d321e06a701656655b32db55134f1c64dbd54235de9aac00ded
font_01_sfnt_off00008958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8958 3380 bytes
SHA-256: cb8371cc187c45116d0984119c2893dd3db0d7f7d568d007a419406e6ca9f389
font_02_sfnt_off00009545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9545 18604 bytes
SHA-256: 744d2d183457972f47b0db91107cea2f4bf33f1c8b8b46bcb558057de1b31a04

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