Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed459c14eaf95586…

MALICIOUS

PDF

40.8 KB Created: 2021-05-22 04:10:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 83c4689d2c750669b732cd756c40c2c8 SHA-1: 0c1c3daeb5ed61dcb7a2acaacb7c233916ba63d2 SHA-256: ed459c14eaf95586697cb74a7d4de8b449a0ca2c35208b03816c0da3c5a9f204
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising "game hacks" and "generators". The ML classifier also flagged the PDF as malicious. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

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/how-to-hack-a-minecraft-server-game-hack In PDF document text
    • http://rumler.pl/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rumler.pl/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://rumler.pl/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://rumler.pl/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://rumler.pl/images/how-to-get-free-robux-without-human-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AC 29444 bytes
SHA-256: d11dc85510a6cb0754594e8a19cb3c3c96ede946c1d2fb7cac8f87827d129412
font_01_sfnt_off00007489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7489 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00007e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E85 18156 bytes
SHA-256: a161276dde2563737e729d23e9d7b4e88663ff4ff7cddafc48ded70db5af995a

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