Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d6a7b07b8dc2f5…

MALICIOUS

PDF

32.3 KB Created: 2021-07-20 16:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 816a3fa89c75b0fde3ac477e7dcde197 SHA-1: 468ce6614ddc843689d1550fd3e08488aeedae81 SHA-256: 54d6a7b07b8dc2f5cd7cb42bbc87a6ad324da0f91c2aafc80fec88581fd3b44d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a 'game hack' or 'free generator' lure. The document body explicitly mentions 'Minecraft Bedrock Hacks' and includes a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the phishing pretext. The presence of multiple PDF_MALICIOUS_REDIRECTOR_LINK heuristics indicates a high likelihood of this document being used for malicious redirection, likely to a site that attempts further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/minecraft-bedrock-hacks-game-hack In PDF document text
    • https://truebibleteaching.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • https://truebibleteaching.com/images/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://truebibleteaching.com/images/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • https://truebibleteaching.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://truebibleteaching.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://truebibleteaching.com/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://truebibleteaching.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://truebibleteaching.com/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://truebibleteaching.com/images/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://truebibleteaching.com/images/how-to-hack-a-roblox-account-easy_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_off00002a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A79 22424 bytes
SHA-256: f01e5f93017a04946ad3cdf60b8cbaf0a1418b30c5ab60e40db1e2072d00c449
font_01_sfnt_off00005c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7E 18268 bytes
SHA-256: cdc10c07562964e95d3c60cab3c6d937b43618c1a43ea86bc4060c2923515875

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