Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c8d138d28b9385…

MALICIOUS

PDF

36.7 KB Created: 2021-06-29 23:15:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 93e2a5ab2cbf97bc5628072ecbef21e0 SHA-1: 554acdb4a37d70db43dfc370a660932ff164f0be SHA-256: 42c8d138d28b938537f0d307035dda50e5a36e85bda5f8d95bc79a7a4c697dac
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure is a link to 'the hack spot' which redirects to http://netcdn.co/app/431946152/the-hack-spot-how-to-get-free-robux-on-roblox-game-hack. The document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

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/the-hack-spot-how-to-get-free-robux-on-roblox-game-hack In PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/how-to-hack-roblox-cheat-engine-67_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/how-to-hack-in-eviction-roblox_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/cheat-speed-roblox_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/hack-roblox-command-prompt_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-assassin-knives-hack_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/best-level-7-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/roblox-person_GM431946152.pdfIn PDF document text
    • https://www.solararabialtd.com/uploaded_files/userfiles/files/minecraft-multiplayer-free_GM479516143.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
font_00_sfnt_off000035fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35FD 22960 bytes
SHA-256: 96db302ca45c87b216b75cc05360caf3d7dcc23e9d5f71036d5433376b9dc50d
font_01_sfnt_off00006935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6935 19572 bytes
SHA-256: 0733f15ff9b348ccd1dca64c886fb7a18a72c341229dfb5638c648bc33a084b4

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