Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb247118dc9df8c…

MALICIOUS

PDF

33.7 KB Created: 2021-06-23 01:51:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9cf451f5c56091110ddb3dfc0628e610 SHA-1: 1dd478fe4577af85a3f6eaef6f1230955d2b11a1 SHA-256: afb247118dc9df8cf645221568975e820f06110a7ade55297eae696a54b22a2d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/follow4follow-free-followers-roblox-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/speed-hack-roblox-app-engine-64-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/robux-free-no-details_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/pokemon-go-free-items_GM1094591345.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-on-roblox-ctrl-s_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-game-free-download-for-windows-10_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://reggieslockandkey.com/images/my-roblox-account-got-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-catalog-hack-script_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-without-human-verification-2021_GM431946152.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
stream_003_off00005f19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5F19 18876 bytes
SHA-256: 82a389522cc392ed39b242947253ab4a7ea1fe35e9c9d1aead67f575b0240999
font_00_sfnt_off00002e6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6D 21928 bytes
SHA-256: 63281ae76742013496f213eb5011a69882fb9c6a91634c9e31a22e18b1bb1350

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