Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12928d0072008ad…

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 10:01:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b1c6c2491560de41a0611ff8074073cd SHA-1: 1a9debc9d1c02a0a152ec381ee656909545eac31 SHA-256: c12928d0072008adb80811d13e1ca67c1a4955c81061da2bbbc651d2e1721f4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to websites offering 'game hacks' and 'free generators', a common lure for phishing or scam operations. The primary redirector URL is https://netcdn.xyz/app/431946152/how-to-hack-roblox-accounts-for-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection, likely intended to lead users to credential harvesting pages or download further malware. The document body text also reinforces this lure by mentioning 'how to hack Roblox accounts'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-hack-roblox-accounts-for-robux-game-hack In PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://perpus.sdmtenggarong.sch.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.communes.comIn 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_off00004bd2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD2 28232 bytes
SHA-256: d193b969bf3632d393ebcfac8b8a571ff792779d9371a69cb51d0941ecb4f70a
font_01_sfnt_off00008bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF0 18756 bytes
SHA-256: 937dc084e295f5db9e9abf98e8d9ece9a75bef1f1a22520950dbcf80e1ec543e

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