Malicious PDF — malware analysis report

Static analysis result for SHA-256 49aa2bc3577de52b…

MALICIOUS

PDF

25.7 KB Created: 2021-07-19 02:54:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a0883eac6fbb001aa3c8ecd1bceb98d SHA-1: d809a81dd9c1f72426fc49c1e4755d8b3f1d7f96 SHA-256: 49aa2bc3577de52bf4ed9288ac5e4bd1688003dad2dc8784b8cca60de2810c88
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The document body and embedded links suggest a lure for users interested in free game-related content, which is a common tactic for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9725

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/how-to-get-minecraft-for-free-on-ps4-game-hack In PDF document text
    • http://iprep-u.com/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://iprep-u.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://iprep-u.com/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2763 22316 bytes
SHA-256: c048ebab294ca176a9a60024fc344d4b28a9dd64d94224310624d0034e2bff59

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