Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b8c7ebdb289c24…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 17:05:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 52815942d4e746b43824ee2b1ca8c37f SHA-1: 7f0e56f493e0e3ebe7ae3c32164235b2a6f24a7d SHA-256: 55b8c7ebdb289c24e73768aa07038da23fd2943c76b257626f0fd5293ed3a32a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, one of which, http://netcdn.co/app/431946152/free-robux-generator-xbox-one-game-hack, is flagged as a malicious redirector. The document body and heuristics indicate a lure for game hacks and free currency, suggesting a phishing or scam attempt. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-generator-xbox-one-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-amievenalive-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-cheats-for-robux-pc_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-cheat-in-miner-haven-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/eyes-the-horror-game-update-2-alpha-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-jailbreak-money-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/cheat-engine-roblox-dbor_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/strucid-battle-royale-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-thanos-gauntlet-for-free_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-banned-for-hacking_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-exploit-download-free-no-virus_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E84 22432 bytes
SHA-256: d944a3106ad2a29d219dcdd6e24964bddafff40ec5d0e6747834813fa793fea1
font_01_sfnt_off000060c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 18820 bytes
SHA-256: 96127bdf2be5ace5c5bd1f6b9ff349ebe8c8c23dd937d64c43466f0ffbcebd8f

Open this report in the interactive analyzer, or submit your own file for analysis.