Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e4bb1e99d3cc0e…

MALICIOUS

PDF

30.3 KB Created: 2021-07-18 23:05:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 88e80be9bf43f0470d68874469c0b5dc SHA-1: 0cd0b9fefd231aa2ab4307f3feb1054fa19eb257 SHA-256: 44e4bb1e99d3cc0e8c423b1c4873c3b78254cc561112b5659b0c3ac2d5da4491
130 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to known malicious redirectors, specifically advertising a 'free generator / game hack'. The document body explicitly contains the phrase 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The embedded URLs suggest an attempt to redirect the user to potentially malicious websites for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0798

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/will-minecraft-dungeons-be-free-game-hack In PDF document text
    • http://immo360grad.com/images/coin-master-free-spins-link-2021_GM406889139.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_off0000247c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x247C 21572 bytes
SHA-256: 53716da19da9bba6a94d430cbde32b8d66f5ae869b59894511f491bd61028325
font_01_sfnt_off00005373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5373 18796 bytes
SHA-256: a3e2eca43bdc685dc91cfde71aa7da7e93eda67de1cffc55b2ecd2ffb91a605f

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