Malicious PDF — malware analysis report

Static analysis result for SHA-256 19821410111af7cd…

MALICIOUS

PDF

35.7 KB Created: 2021-05-25 10:36:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 41c3f6fcd9a329236b9a45ba2b52f5c5 SHA-1: 155165db3d05c034ec4f8ccd0d202ce4b4663500 SHA-256: 19821410111af7cdd0bbffe87b455468e2a65a5085edb053f0a48d5883a21f82
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as free game hacks or account generators. The document body explicitly mentions 'Minecraft Education Edition Free' and includes a call to action 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/479516143/is-minecraft-education-edition-free-game-hack In PDF document text
    • https://cosmosocean.com.tw/upload/files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33EC 24652 bytes
SHA-256: 65c0328c91bffa51891a9a6bc0995a791f61ba23d3ab6bcf308b73e22212ad57
font_01_sfnt_off00006b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1F 18024 bytes
SHA-256: 860599eb2378c11ce9f069b8b1214934614c40beead093e3b25ec1c42f286d72

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