Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a845ea03a5af36…

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 23:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4f42ce70a2b4e1d8a5985fd71054bb4c SHA-1: 3b85f309e7503221e990e5e2f9a3aa70c3affe22 SHA-256: 48a845ea03a5af367e09d49a578012d8dddc8c3e1ec00b8a94d2eab4d7cb1309
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'robux generators'. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, which is a common social engineering tactic. The presence of multiple links to known malicious redirectors and the ML classifier's high confidence score indicate a malicious intent to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-hack-2021-game-hack In PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/cone-master_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://if.itk.ac.id/asset/backend/upload/ckeditor/files/apps-to-get-free-robux_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_003_off00004a6b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6B 28960 bytes
SHA-256: 7e5bab57258f597d30295c604acec9d6850e5733bd55e3dc3039c6dd7d50a571
font_01_sfnt_off00008c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1E 18648 bytes
SHA-256: 960613bb0fa4c19a2503237e067522a4d484b1b5f3e7387dbdf2c2d9282ca05f

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