Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e135e582ea3d47…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 15:16:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4998950738805c2b06919c1010adead4 SHA-1: dfc8b149a228b0779451cd2431ed2976444b85cf SHA-256: b0e135e582ea3d4769c8ba51a632b14e7586b6b244adc0406a04c35bb5c94cd9
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 0.9648

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.xyz/app/406889139/master-coin-hack-game-game-hack PDF link annotation
    • https://www.ak-oroslavje.hr/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-free-apk-download-016-0_GM479516143.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_003_off000046ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46CA 24776 bytes
SHA-256: 11182380b18cac504300e6fc91d2010375d237d6003ed60d5ba28dc8f26d0b9c
font_01_sfnt_off00007ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA2 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000089a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A5 17976 bytes
SHA-256: 61a7e5df1615dd2bed66e1a1700862b148b1481b00ec863c05290e253e9efb54