Malicious PDF — malware analysis report

Static analysis result for SHA-256 560fed1fe1465307…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 09:51:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e9df2800b3132aa5cb030d536f88cbd6 SHA-1: e78dfddda79bd4f2c5d8941f2d20710258f636d0 SHA-256: 560fed1fe146530781ccf0bad7bf35c4cef67cafbf756c2712db2681d77c50b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, directing users to a known malicious redirector. The embedded URL `http://netcdn.tw/app/479516143/minecraft-windows-10-hacks-game-hack` is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into downloading potentially malicious content.

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 http://netcdn.tw/app/479516143/minecraft-windows-10-hacks-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-admin-hack-client_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hacked-to-rape-a-7-year-old_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-do-you-get-free-robux-on-your-phone_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robuxs-no-offer_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-promo-codes-march-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-tp-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-free-unlimited-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-money-on-jailbreak-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-boy-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-android-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/2021-free-robux-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-generator-2021-without-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAC 21716 bytes
SHA-256: 007801c86237933c0601dd6d303705470742046d2c7dc1f5e46e9959f187cabd
font_01_sfnt_off00005e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6F 18980 bytes
SHA-256: d5302a4262de0fe7b8485f3acdacc44f64fa6fcaf4d5e81661a82341b69d1a02

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