Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdb720b4d97d4f5…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 01:57:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a30b65144b82c049f7b28b1f37be9009 SHA-1: f42b11ed732eafb41c5786a506e962dc99e995f8 SHA-256: 0bdb720b4d97d4f545ce0a9245f9d125a25d0f738c9cd94d39fd094d0f8705cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is http://netcdn.tw/app/479516143/wurst-commands-game-hack, which is associated with malicious redirector infrastructure. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious sites, likely leading to further malware downloads or exploitation.

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/479516143/wurst-commands-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-infinity-rpg-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-unlimited-robux-robuxplus-live_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-app-download-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/collect-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/admin-panel-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/speed-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheat-engine-64-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hax-teamcf-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-roblox-accounts-v3rmillio_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/download-coin-master-apk-hacked_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_off000030fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FB 22212 bytes
SHA-256: 0f4338a420051995845d89c9b320f82d715e69e809983c174a0ff6eac6dc6c98
font_01_sfnt_off00006226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 18652 bytes
SHA-256: 2aa4b3a06f8f810455c2de55047681fbe1f4f7c5efd97b9b8db0efc9e0a5a8f6

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