Malicious PDF — malware analysis report

Static analysis result for SHA-256 053c0ebd862d6198…

MALICIOUS

PDF

36.5 KB Created: 2021-05-19 19:34:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b89e30a6f823a00ecdf0c6c8ca32ad5d SHA-1: dcc12e58906875b2ec3d7ac43d2998c3325ff114 SHA-256: 053c0ebd862d6198c35c9c6ad6b57aefbd9185c55f4ff511f9b0e7ebbc3cef8a
130 Risk Score

Malware Insights

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

The PDF document contains embedded text and links that mimic a "Pokemon Go Free Walk Android" hack generator. The primary malicious link, https://netcdn.xyz/app/1094591345/pokemon-go-free-walk-android-game-hack, is flagged as a known malicious redirector. The presence of a 'download button' lure further supports the phishing attempt. While no scripts were explicitly extracted, the PDF structure and malicious links suggest an attempt to redirect the user to a site that likely hosts a secondary exploit or malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/1094591345/pokemon-go-free-walk-android-game-hack In 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
stream_003_off0000342a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x342A 24640 bytes
SHA-256: 5d0c5656d4864c3adc41b4cf1bbada90998079e9523f847db37793fcd2644b24
font_01_sfnt_off00006c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C95 18636 bytes
SHA-256: 1cc26509abb5b3bc2f18d0acc750e6d7ded393a74c47fd1a1d498644daf7bf8b

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