Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab9dd50d4f8c097…

MALICIOUS

PDF

37.0 KB Created: 2021-05-22 13:52:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b66828a00705f40ef3ec0c9d654e00b9 SHA-1: a1e8332e167ceb490310b7da4ad6e9a4160a359b SHA-256: dab9dd50d4f8c097039cb9afb6c4a9f706def549a2077fdb42992097a419f2e9
160 Risk Score

Malware Insights

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

The PDF file contains multiple links to known malicious redirectors, specifically disguised as 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/479516143/get-minecraft-for-free-game-hack. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links, likely leading to further malicious content or malware downloads. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt at client-side exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/get-minecraft-for-free-game-hack In PDF document text
    • http://karldall.dk/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-get-free-chest-in-coin-master_GM406889139.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_off00003205.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3205 28284 bytes
SHA-256: 9b61ec6cc1afe963f0019bd37cc6856b9b1029f3bbedc1bab448998a90bbf503
font_01_sfnt_off00007107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7107 17712 bytes
SHA-256: 35f99bfb73b52248bbdf58e6e807942ea3200a6c0759a8418b864f3a1fae0a50

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