Malicious PDF — malware analysis report

Static analysis result for SHA-256 84805897ceb23ce1…

MALICIOUS

PDF

44.9 KB Created: 2021-05-15 06:07:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c8aae0b42a00485386d38824ab1f62fd SHA-1: 0736d916395e97eb1a30443c6b25521eb815d499 SHA-256: 84805897ceb23ce1d54176fdfdd1decd2316aeeb9a01405026da0a6063514bf1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures for game hacks and cheats, such as Coin Master and Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a malicious redirector chain designed to deliver further malicious content or lead to scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-spins-link-today-hack-game-hack In PDF document text
    • https://kimolos-link.gr/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/instantrobux_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/get-robux-com_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/roblox-free-pets_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-coins-and-spins-app_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_003_off0000490e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490E 24920 bytes
SHA-256: e7f5bf985213585592eac242ca11cecbc7df615242b4f3736604b0c61623a0ab
font_01_sfnt_off000082a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 18412 bytes
SHA-256: 78e241cf2016df2e6ebc2ce00be22676d65e6ec45cce47e077571dd8c0cc4425

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