Malicious PDF — malware analysis report

Static analysis result for SHA-256 02113360438f3a9b…

MALICIOUS

PDF

43.2 KB Created: 2021-05-19 15:39:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7ec4937d81473a01714fc637dbc4cdca SHA-1: cc80c790cc28af8517a36b84723a33a511b7801c SHA-256: 02113360438f3a9b5fbe604ab21dfc3baf459b57fc5bf7381bcda4ffc7e82d11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a "free generator / game hack" which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to game hacks and URLs that are likely part of a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/1094591345/pokemon-go-free-or-pokeball-plus-game-hack In PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB4 26704 bytes
SHA-256: 0d0553232fd9b620e12918d3ecc2de78e5011d68eac4f7d57047492455031f08
font_01_sfnt_off00008633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8633 18444 bytes
SHA-256: b05ef9be8ed3abd80a396464dc2616535ecc7523e326cdc4f5f802fd0b777cc6

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