Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a2f48a2b703d4b…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 01:46:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e299c6cd9bd050e18ed4a1c3bec9340d SHA-1: d675a9f5639f069b31de8567fd6ceef99606a070 SHA-256: f6a2f48a2b703d4b997364e2fcadd64c4343fd1db483f7f8db715facd8270a2f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with 'game hack' content. The primary link, http://netcdn.tw/app/431946152/roblox-games-with-free-boombox-game-hack, is identified as a malicious redirector. The document's structure and embedded URLs suggest an attempt to trick users into downloading a second-stage payload, likely for malicious purposes.

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/roblox-games-with-free-boombox-game-hack In PDF document text
    • http://library.acehresearch.org/repository/guess-the-emoji-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/new-figer-hack-pastbin-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-gamepasses-on-roblox-by-inspecting_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-hack-roblox-usesing-python_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/yyoutube-robux-hacks_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-stopped-working_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-free-anamations_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-cheat-on-risky-strats-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-exploit-injector-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-best-exploit-cheat-ever_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/cool-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-roblox-outfits_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_off0000318e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x318E 22572 bytes
SHA-256: d7fea39ee943c0f5b7e2525e230401d19473ba7b68c021ed93bdafa97a95bd3b
font_01_sfnt_off000063fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 19496 bytes
SHA-256: 1fe97cacaf87faaf7e87019df11dc5da97cf6ecddb8fd4c97aefa44281928813

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