Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c4d4177e64b58b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 08:29:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 01299f9c39861f783b9ab51c0a4e4fc7 SHA-1: c1ba972066eebc611891ef8a16bfb9d6df7b47c0 SHA-256: e0c4d4177e64b58b8cf40c6c9132daf888a9ae4fb8dc8e7dfdf7093b3a62c7a6
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or malware downloads. The extensive list of SEO-optimized PDF links suggests a campaign to attract traffic through search engines for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/roblox-imagine-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-para-volar_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-strucid-free-skin-code_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-card-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-apoc-rising-skin-giver-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/nike-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/best-free-gun-models-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-cheat-engine-61-money-hack_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-no-hacks-or-virsus_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-jailbreak-hack-github_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
font_00_sfnt_off00003025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3025 22396 bytes
SHA-256: b9e0459cf233b7a13780e76c81b9623c012da635ef3de53494fa97cab54aeb6a
font_01_sfnt_off0000621a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 18864 bytes
SHA-256: ea4d1e0d66ed511fdb3ea7ada25a2e13094c253047fc11979a144078ebcd1e51

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