Malicious PDF — malware analysis report

Static analysis result for SHA-256 39446c89a8928001…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 11:15:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c3333dda326b3c4bbe3f1a7400e77823 SHA-1: 125ec9c2b807b9420a7f286fa443c94f10b7b85f SHA-256: 39446c89a8928001f2c0320ce879400ec9cf9f79d79b853a6fd60868c73d08cf
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document contains numerous links designed to lure users into downloading game hacks or cheats, leveraging topics like Roblox and Coin Master. The links point to known malicious redirectors and a large number of SEO spam PDF files, indicating a campaign to drive traffic to potentially harmful sites. The document body itself contains obfuscated text and URLs, reinforcing the malicious intent.

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-lovenet-game-hack In PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-in-lumber-tycoon-2-roblox-any-game_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-supreme-roblox-model_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-hack-download-pc-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-blue-hair-com_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-do-i-get-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/cheat-engine-table-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/a-free-rix-code-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-cheat-in-lumber-tycoon-2-roblox-axes_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hacked-roblox-accounts-list_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_off00002e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5E 22100 bytes
SHA-256: 51f3df5708049901089054b94f09096cd63d07f4596effabcae638aae1eb8370
font_01_sfnt_off00005f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F58 18704 bytes
SHA-256: 36552c55d6b01c3633473854ce8ec45091a4a8a9b855d0711e20b63456f47980

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