Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6dd8be1c8c2ba04…

MALICIOUS

PDF

38.2 KB Created: 2021-05-15 00:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 11a7021e47984a2f95f92277ed791ce0 SHA-1: 1941d4dc7023db5d4b7731f176de2970dccb2df0 SHA-256: c6dd8be1c8c2ba04f53fdf98c793011b722222d833bfea11633bfd719c9d691b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free spins. The heuristic firings confirm these links are associated with malicious redirectors and game hack lures. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-bonus-game-hack In PDF document text
    • http://eooe.gr/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-daily-free-spins-link_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
stream_003_off000049c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C8 25572 bytes
SHA-256: a5913039046a55639539222e30e76044b4b243ac05cc02e3f7fd4c34cf0b1cab
font_01_sfnt_off000083d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D6 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855

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