Malicious PDF — malware analysis report

Static analysis result for SHA-256 287b851bf337bb1f…

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 18:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 07adef10bd49153dc01a885a88a00bcd SHA-1: cb901c1cb5e6a4eb8b9e1d1d6f5987a0e29014d1 SHA-256: 287b851bf337bb1f545067f6feb9a953761b92b371d9cc3113b245bd32c283aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-account-roblox-2021-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or social engineering lure to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8575

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/free-account-roblox-2021-game-hack In PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://learning.man1lahat.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_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_off00004be6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE6 27108 bytes
SHA-256: 9f129988e55a9ecd2b5c8aa0f4baf99081c4203bed2fdbcf65a71619e15a02fe
font_01_sfnt_off000088d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D8 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00009297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9297 19400 bytes
SHA-256: 34aa0f965c515cefb0a7d218085b788d9ad4868a13c5ebed422ef0717c30c4ee

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