Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b99b060bf51e9a…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 08:57:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5dd8b3bbbf828d034471e862ddf29cea SHA-1: ab8474241109e058a74c0b06e7a7e25c2c2ffbc8 SHA-256: 06b99b060bf51e9a7fa0e316b5c5d64d025232578915e028de7df8d78087bc7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and sites offering free game currency or hacks, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs further supports a malicious intent to redirect the user to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-ninja-magic-ninja-free-game-hack In PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-using-inspect-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-anyone-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-cheat-in-roblox-guess-that-song_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-2021-october_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/hack-roblox-luq_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-mods-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/cheat-engine-65-download-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-what-to-do-when-you-get-hacked_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-sword-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/exe-roblox-hack_GM431946152.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
font_00_sfnt_off00003042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 22676 bytes
SHA-256: 3fe6f151c0f248ed9f0272491b6c91804e732ed39cc2262b77bada8314402fec
font_01_sfnt_off000062ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 19152 bytes
SHA-256: 31145aeecbd0b640b58981d998b14ccf1671fd088d897bed6ccd31747ea54bb3

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