Malicious PDF — malware analysis report

Static analysis result for SHA-256 becd4d4bdd29c51d…

MALICIOUS

PDF

49.8 KB Created: 2021-06-09 06:57:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 41214641aded665e82aa73df01782996 SHA-1: 5e4dc7589f54ed462074723bcd0508a9e0bd3817 SHA-256: becd4d4bdd29c51dca2a8bda141a056ab12ab636705df603db170cdba59a3b02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' and directs the user to a URL that likely leads to a malicious download or phishing page. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures suggests a common social engineering tactic. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/no-human-verification-robux-free-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/pokemon-go-free-items_GM1094591345.pdfIn PDF document text
    • http://reggieslockandkey.com/images/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/pokemon-go-free-vs-ultra_GM1094591345.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/pubg-uc-in-rupees_GM1330123889.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/pokemon-go-free-account-2021_GM1094591345.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D3 29116 bytes
SHA-256: 519da4d228b0d7f8fac501f839cd16aa689b4e1cb0ddaf34fc8a1dfc39c97d81
font_01_sfnt_off000091dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DD 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E85 18860 bytes
SHA-256: daf8cbc1c1efd45ed53e1f0ef7b2171c8d7a9fd2241d0c2bd2d6d0d309f844e8

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