Malicious PDF — malware analysis report

Static analysis result for SHA-256 5777237298c42c13…

MALICIOUS

PDF

48.5 KB Created: 2021-05-11 03:05:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f961f1e55391d587b9128659520a2f0b SHA-1: 6a25faf9276e5de39cda5533c1e4c8855982b312 SHA-256: 5777237298c42c131c6d1d904a32b3d093ce0ce39840d8fd0347e0f16c1ee644
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game-related content, specifically mentioning 'Minecraft Free Exe' and 'free generator / game hack', to entice users. It contains numerous links to external websites, many of which appear to be part of a link farm designed for SEO manipulation, and one critical link points to known malicious redirector infrastructure. The presence of a 'remote-support tool lure' heuristic suggests a potential pretext for further compromise, possibly to install unwanted software or gain remote access. No scripts were extracted from this sample, but the overall structure and linked content indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/479516143/minecraft-free-exe-game-hack In PDF document text
    • http://news123.it/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://news123.it/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://news123.it/images/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://news123.it/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://news123.it/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://news123.it/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://news123.it/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://news123.it/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://news123.it/images/hack-download_GM431946152.pdfIn PDF document text
    • http://news123.it/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://news123.it/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://news123.it/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://news123.it/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://news123.it/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://news123.it/images/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://news123.it/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://news123.it/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://news123.it/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://news123.it/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://news123.it/images/actual-free-robux_GM431946152.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C6C 26064 bytes
SHA-256: 00c6ed43377de08bd2819eed6a159e34499b726ecdacd035cccffca15c67f095
font_01_sfnt_off0000882d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882D 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00009282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9282 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C93 17780 bytes
SHA-256: 184f68a403119e274d74e0b6050f83bd20a8f42ea09f5a6442f850a022aaf90d

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