Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da75bdc62445f09…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 08:27:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 57f9acf5186141160d0669067275433a SHA-1: a1f3c9936ba91e433871139d61ecaec95d793c68 SHA-256: 0da75bdc62445f0988eaf4f8d29c2ae7e3274eedab08a695632c5040252ec3f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and free currency. The embedded URL 'http://netcdn.tw/app/431946152/free-robux-card-codes-game-hack' is flagged as malicious infrastructure. The document body also contains this URL and related game-hacking keywords, reinforcing the lure.

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.tw/app/431946152/free-robux-card-codes-game-hack In PDF document text
    • https://www.tena-g.hr/files/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-hack-into-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/est-il-facile-de-hack-sur-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-hack-draw-it-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/ban-hack-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-use-editthiscooke-to-hack-accounts-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-phantom-forces-hack-for-all-guns_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-make-a-roblox-hack-in-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-promo-codes-for-free-robux_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_off00002fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2 21772 bytes
SHA-256: 9670ba9a5c8d705bae4299fe027d4f4143c38c524fd39da880d10b80967a4a8d
font_01_sfnt_off00005f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6B 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

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