Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a998f116471da5…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 00:47:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d116be87bc6580a92d25b3c2e1559fef SHA-1: d3e54e5db90e02d9217615011457cdbcf6f507c1 SHA-256: 49a998f116471da5098cc00b2fe86840058d257a591bb5585bea6047212d8c6c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as offers for free game hacks and currency. The document body and heuristics indicate a social engineering lure designed to trick users into clicking these links, which likely leads to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.online/app/479516143/real-minecraft-for-free-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/mc-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tiktok-free-invitation_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-daily-free-spins-link-today-2021_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_004_off000051bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BB 25772 bytes
SHA-256: ad095d3ceac29e2026b020abae0e4c8d38a2930bbbfede06f20615d8d913e166
font_01_sfnt_off00008c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C42 17784 bytes
SHA-256: d9b0d0c4c4ee4a540b7fb0061982a790ffe87580883f4fb909ed1eb0697febb4

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