Malicious PDF — malware analysis report

Static analysis result for SHA-256 7243a4acc6fc4719…

MALICIOUS

PDF

41.7 KB Created: 2021-05-12 21:32:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 33c2cb35cbc9e6055e877ddadd5e4ec0 SHA-1: e96baaa58dd113349b52627a530216a9da34bf93 SHA-256: 7243a4acc6fc47191c7790983da56451696d89f4fbd79d17c2aadebd3a7cf151
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hack generators or free currency offers. The primary malicious link directs to a known redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack aimed at driving traffic to potentially malicious sites.

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/406889139/coin-master-hack-programers-game-hack In PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-generator-2021-no-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
stream_003_off0000482a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482A 24436 bytes
SHA-256: de6232b2e68bfa6b5839f97bfe853084a8f331bf0d20cc0574df07d4842036ad
font_01_sfnt_off00008026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8026 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785

Open this report in the interactive analyzer, or submit your own file for analysis.