Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cab84ac9230502c…

MALICIOUS

PDF

45.2 KB Created: 2021-06-08 15:20:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9ddb3c5084e428151f816be2817f26ad SHA-1: ca445e4a31bdda1033480662e904a4f86c946b15 SHA-256: 9cab84ac9230502cc928a36b78a6a93b1464795aeb26f72d9b57058a9fe7b7c0
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and impersonates Microsoft to encourage clicks. The primary lure is a "free generator / game hack" for Roblox, aiming to trick users into visiting compromised websites. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/roblox-robux-hack-website-game-hack.
  • 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.tw/app/431946152/roblox-robux-hack-website-game-hack In PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-account-roblox-wiki_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-roblox-wing_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-no-downloads-2021_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-robux-creator_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-robux-without-human-veritfication_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/robux-hack-no-survey-mobile_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-minecraft-website_GM479516143.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-robux-codes-november-2021_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/how-to-hack-other-accounts-in-roblox_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/free-xbox-packages-on-roblox_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/how-to-download-roblox-walk-through-walls-hack_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/duengon-quest-tips-and-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://oghousesgalore.com/wp-content/uploads/fsqm-files/minecraft-for-chromebook-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_off00005260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5260 25528 bytes
SHA-256: 91e6b9e8cbcabf69798323299d495467d1e04ca396cdcda0c80402c9f1392053
font_01_sfnt_off00008cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBD 18744 bytes
SHA-256: b612121646431b02cc2ec6fd39d6165601846a2df93e1174076bdbccf59df185