Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c2e24f4bea1e5f…

MALICIOUS

PDF

45.2 KB Created: 2021-05-13 11:41:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7d239336618817f261a0be166210040 SHA-1: 7bf9f5390b4e05e06c15098dc8701f3e6ff78d76 SHA-256: a3c2e24f4bea1e5f93c966425af43c6cb320bc27f572e124ea1f1f04759c4d38
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free generators". The primary lure appears to be related to "Coin Master Hack For Android". While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful sites. The presence of multiple redirector links and the ML classifier output contribute to the high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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-hack-for-android-game-hack In PDF document text
    • http://christiansymbolkits.com/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://christiansymbolkits.com/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://christiansymbolkits.com/images/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://christiansymbolkits.com/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://christiansymbolkits.com/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://christiansymbolkits.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ae9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE9 25628 bytes
SHA-256: 47858041a2231ba90bfea5d6ea32037a221eaa59322b508e1d0baec0f5345474
font_01_sfnt_off000083f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F4 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off00008ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 18056 bytes
SHA-256: 59174fbff90841f3d82b951a67024dd49c53f2706d138598019600dd1f76f1a3

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