Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf375e460ddbb67…

MALICIOUS

PDF

36.5 KB Created: 2021-05-21 20:56:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3bcce9d9bb44c9d419002f4310f0a992 SHA-1: 564758666e183193b69440c60f51e8b4977bf227 SHA-256: ccf375e460ddbb67fe7b098606f7bbffc27ecf718886a518afe040177e228ed0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting game hacks and generators. The document body explicitly contains the phrase 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' and a primary malicious URL, indicating a lure for users seeking in-game advantages. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/406889139/coin-master-free-gifts-game-hack In PDF document text
    • http://pisanie-nut.pl/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://pisanie-nut.pl/images/pubg-50-uc-free_GM1330123889.pdfIn PDF document text
    • http://pisanie-nut.pl/images/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://pisanie-nut.pl/images/tik-tok-free-fire-30-detik_GM835599320.pdfIn PDF document text
    • http://pisanie-nut.pl/images/free-roblox-boy-hair_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31FC 30028 bytes
SHA-256: f8e7fe86104750038931eed634034b701b0d542d43ebaeddc7664e521c9422b2
font_01_sfnt_off00006f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F35 17712 bytes
SHA-256: 401d56b29285354d6954c3c26e793cbeb56329cdc5209d9139ec018457d4ba23

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