Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39de1ed6fc8ca7d…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 19:17:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2fb7626deb94ccb19a368e881fbea2bd SHA-1: d0e30d919d9848051f74bce3da8d85e990326989 SHA-256: c39de1ed6fc8ca7d780c11a8b2858004096d7ba96914c39d113a05b4168f3513
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.online/app/431946152/free-robux-no-download-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to exploit user interest in game-related cheats to lead them to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/free-robux-no-download-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/make-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-g_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/classic-minecraft-net-hacks_GM479516143.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_004_off0000521b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x521B 28668 bytes
SHA-256: dda692032f9ad55b301177fe2f283dffae8c64b73d9138fa5b796b0e4710396f
font_01_sfnt_off0000933e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x933E 18824 bytes
SHA-256: a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42

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