Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b145c48ff31c5d…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 03:55:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 29bdbc77823535d72d6def1336fd60c8 SHA-1: b60b44ef7320bcc74f1a911b6b2912b075cacc7c SHA-256: 29b145c48ff31c5de1bf87eeec831dd6fb73aa0a4ab5576ef7ac995c37f66240
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/431946152/roblox-skins-boy-free-game-hack PDF link annotation
    • http://techmobil.pl/images/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-today_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spin-today-2021_GM406889139.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_off000047f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F4 24532 bytes
SHA-256: 9f0b9d287189a6ed73e6ca3343c96b52d6e293d1055830547678a2a73af381c2
font_01_sfnt_off00008074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8074 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 18420 bytes
SHA-256: f34de68c913d1c931e579594a611635df95b6f402bf6c6d3ef5f8f4a3ceebe71

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