Malicious PDF — malware analysis report

Static analysis result for SHA-256 132d9b5b06fb23da…

MALICIOUS

PDF

45.5 KB Created: 2021-05-16 08:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 45d223fd708dffa9d5d6ca4186112439 SHA-1: 8ab6201e15b4ba87a638f26f6b1456aa4447d2d1 SHA-256: 132d9b5b06fb23da713023356c3043b7f0d95394ae110d77a17bca439b617573
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 0.9507

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/how-to-get-free-cards-for-coin-master-game-hack PDF link annotation
    • http://techmobil.pl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://techmobil.pl/images/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://techmobil.pl/images/free-robux-on-iphone_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_003_off00004990.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4990 26144 bytes
SHA-256: d011039a526f955a458986e6f27394dbb8685b1a71eedb43d7197b126173240c
font_01_sfnt_off000084e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E3 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 18048 bytes
SHA-256: c3f371278b7fe6873213599d15e2d537c4e536c02b9f7f2e86ee974651b3645e

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