Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4a815098a33ead…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 11:07:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 53151af0c304aa47822120e680650c2c SHA-1: 30f6ae7acf4b85cf922ffd4f36f0ed572ae0ff5b SHA-256: bf4a815098a33ead90203508d3a31fc4fe73589677f567506e4b90a4ee595e24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary redirect URL is https://netcdn.xyz/app/431946152/woman-roblox-game-hack, which is flagged as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure designed to lead the user to a potentially harmful website, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/woman-roblox-game-hack In PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2brebes.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-website_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_off00004ae7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE7 24148 bytes
SHA-256: 30627f90fa385f426922059e04b99835725b18b9be0774dc34b5adda5575efa6
font_01_sfnt_off00008239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 18468 bytes
SHA-256: 92a7e3fdf75e6a3eed9122ed44239e161dce5939606c0e86a8fd8d519394caff

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