Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff23295c0f9a125…

MALICIOUS

PDF

44.6 KB Created: 2021-05-12 07:08:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8d0a979a6a340b173dc04c6985c864d9 SHA-1: 09b926dbe1ebe74cb81b7580306b18cd2f993e23 SHA-256: 3ff23295c0f9a125c6bf51fbc341a4eec47839a92ff9ff347edef2a315260f85
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a game hack generator. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for exploitation or further redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-spins-gratis-game-hack In PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5kediri.sch.id/__statics/gudangsoal/files/play-roblox-free-online_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A16 24920 bytes
SHA-256: 649f2e36af7d2798534f3063d856d413e61621f006f6e1c905a2825e870ee747
font_01_sfnt_off0000836b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1D 17724 bytes
SHA-256: 14ee5d8b12066898ac0dd126fd621bcbe737ddb1f68eadc349fa8e2a98ba3f20

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