Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb03f8002599adec…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 19:45:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d8784ff1efff0d113cd4f69a5db482c4 SHA-1: 1e0e80727a4d58c2ecee76d389b489f257c19f6b SHA-256: fb03f8002599adec9031d47bc1403928182853071378567dbc8ff1bc2dcb815b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a 'free generator' or 'game hack'. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document's content and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially harmful sites.

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-no-human-verification-or-survey-or-download-2021-game-hack In PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-service_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-outroageus-roblox-codes_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/roblox-epic-minigames-hack_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/robux-hack-codes-2021_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-get-a-free-redeem-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-hack-coin-master-2021_GM406889139.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_off0000308b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308B 21884 bytes
SHA-256: f1cef5f3547f059aa8f37cca73068b8e5ccbcf4076b7842557ce359b14ef0d2c
font_01_sfnt_off000060ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EE 20608 bytes
SHA-256: 84e083980845d6db402b7178d67bc98d29f4cdbc71d93f4e93f474fc98f39a9a

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