Malicious PDF — malware analysis report

Static analysis result for SHA-256 677ec1ec3cbacd0d…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 02:15:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9a1730194313fe87945a6bf8ce7be4d9 SHA-1: 1076a25e90e716e72cccfcf5f77f1ee3c1062427 SHA-256: 677ec1ec3cbacd0dd2fd4d16f4253acab7ce74a5bfcddb0a2b9393f08b494c9f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure related to 'free Robux' or 'game hacks' to entice users to click these links. The primary malicious link identified is https://netcdn.xyz/app/431946152/websites-that-give-you-free-robux-game-hack, which likely leads to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/websites-that-give-you-free-robux-game-hack In PDF document text
    • https://ogm-goettingen.de/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-time-hack-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_off00008169.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8169 19108 bytes
SHA-256: 6861c41ba735d8f67874cff181a99ea6f9d656df5851b3483f669947649d93e1
font_00_sfnt_off000047de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47DE 25476 bytes
SHA-256: 3837d2e2366f1125580c7af42c3cf65502e7982cfdbc641ed2c635b5b26c33dd

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