Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df01d6349be9548…

MALICIOUS

PDF

35.7 KB Created: 2021-05-21 02:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: eed7071f5878bc0251f2ec81133e8ba3 SHA-1: 257cfa9b3f38f595d38d0ad8ec303ff480cd42c4 SHA-256: 4df01d6349be954881a861856b6000b95cea9bc84b429ba4bb001a6341be5b9c
160 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, including a known malicious redirector, disguised as generators for popular games like Coin Master. The document body explicitly mentions 'Free Links For Coin Master' and 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a lure to trick users into visiting these sites. The presence of embedded URLs and the ML classifier's high confidence score support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-links-for-coin-master-game-hack In PDF document text
    • http://axia-verlag.at/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://axia-verlag.at/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://axia-verlag.at/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://axia-verlag.at/images/coin-master-spin-hack-pc_GM406889139.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
font_00_sfnt_off000033e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E5 24572 bytes
SHA-256: 02559ef19660c3e860d2c6126973b8af0f26b2b533d343afae3ed77da8c43282
font_01_sfnt_off00006ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA0 17880 bytes
SHA-256: a04fca5b08559e76c7fc5751e50b7e5576d0693cd390b0db561ab022dd525d54

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