Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00631242a5c179f…

MALICIOUS

PDF

41.0 KB Created: 2021-05-23 21:08:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b46c654760bc4829cf3a56e6b9d24cd2 SHA-1: 658dcb5efb20d57938a466f477394e01e8c4272b SHA-256: d00631242a5c179f1936d6e4452ac6b019cf841a1d79f2ba58778f0c0de62ca4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as offers for free game items or accounts. The document body and heuristics indicate a lure to trick users into clicking these links, which likely lead to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7508

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/free-minecraft-account-game-hack In PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://cepobajodeva.com/images/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/wwwcoin-master-hack-game-download_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D4 30348 bytes
SHA-256: bfc48cfbaba10083245d099d3f064fc872c51f40f432a1d51e426c4a40752b94
font_01_sfnt_off000076cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CD 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000807e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807E 17848 bytes
SHA-256: 6e6a79a2e8d921ce4110ee7bea64574f9639f41d67ba7d7747bc91dcd849eff6

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