Malicious PDF — malware analysis report

Static analysis result for SHA-256 39534ba664137288…

MALICIOUS

PDF

40.4 KB Created: 2021-05-11 01:11:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d18e741b0c79990330233f9ec21687a3 SHA-1: ad2104415c6aa1b25598f124c9fea555a5884daf SHA-256: 39534ba6641372885e1a808c7ca36f3876ed96fae857f2c0b0b2e61a3e516c06
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body explicitly mentions 'Free Spins Coin Master Without Survey' and includes a call to action to 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. The embedded URLs suggest an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier clean score 0.0228

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/free-spins-coin-master-without-survey-game-hack In PDF document text
    • http://aljazeera-me.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.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
stream_003_off00003758.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3758 24636 bytes
SHA-256: 159e987fffb17154c46d235059c283840c5686295790bd709ca57eb1eecc2a89
font_01_sfnt_off00007034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7034 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00007b13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B13 18684 bytes
SHA-256: ad7fa04790fc34b76c8e1b16c403c61c32ceaee032d5a8afb0071baf0a254118

Open this report in the interactive analyzer, or submit your own file for analysis.