Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba78263aaa39c52f…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 18:55:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 529d1f9ec220dbc7bfca7f73ed16efd7 SHA-1: db7161172ec4063d141aa1dce80b645ec3822e62 SHA-256: ba78263aaa39c52f0421543d7bbc0ecd9e59b280317b855196a586b8b93362a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The primary link directs users to a site offering a 'minecraft-free-download-no-virus-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/479516143/minecraft-free-download-no-virus-game-hack In PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://ciudadata.ec/images/ckfinder/files/coin-master-free-coins-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_off00004b82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B82 24392 bytes
SHA-256: 03293d5c5ccff7985fd995f50c3808c09be2e0657188ae2b67fff1debf15e948
font_01_sfnt_off000082be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BE 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008cce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCE 18564 bytes
SHA-256: 73fda2f7f87cf364c845d3fc1df52f7bb102f180f2e093609ba7690804eae928

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