Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d23ae378be12f3…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 23:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b634f629355158373ff6eeec4e71bd8b SHA-1: a9b2abbd6ccaeec90968660385044b05055b9dca SHA-256: 75d23ae378be12f3a132d9fd679eef5298ab78ad0bccadc369b3b7906b9ab237
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.tw/app/406889139/free-coins-coin-master-ios-game-hack PDF link annotation
    • https://www.ak-oroslavje.hr/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-sell-items-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-hack-username_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-how-to-hack-robux-with-inspect-element_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/rcm-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-how-to-get-free-gear-2021_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-home_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/getbucks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-face-roblox-makeup_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/rbx-claim_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000356f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x356F 23472 bytes
SHA-256: b0e96078da9aab880e1a393170616d08540ac6e83e8ae68fef1fd0329d4bac2f
font_01_sfnt_off00006a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7F 17996 bytes
SHA-256: 89cbfc78b6b64325627d68645665868ebb223b7d98690681809d971a84d5890e

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