Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59acc97dbf12331…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 01:20:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 06baf6b5f704ac556c9bd9df10291271 SHA-1: 616c21bf5730fd8453b49ce08e304638a93bbcd1 SHA-256: b59acc97dbf12331300a77e2742170a4de4328d7335e47f00ab84ecac7f0b860
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic firings indicate that the PDF links to known malicious redirectors and is designed as a lure for game-related exploits. While no scripts were extracted, the embedded URLs and the nature of the lures suggest a phishing or scam attempt to direct users 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/406889139/coin-master-free-attack-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-builders-club-roblox-trial_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/siri-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/azurewrath-hack-roblox_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_off00002fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA2 23028 bytes
SHA-256: 0ec8c9ac144cc381633941b605b3667fc6f296317ce5f63c0436e406bd0047f6
font_01_sfnt_off00006348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6348 18168 bytes
SHA-256: 75c6e626bf291d9515ad923a84f4b1e9b9d7c6cab114e50afbb6b6b9866eb8df

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