Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cfd73696c207c80…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 06:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7abb3f88d87d667dcf83dd26df68f813 SHA-1: a4458120a900ca29ff3530a1ee7cffc7ffafbc60 SHA-256: 9cfd73696c207c80074b85ec4587dfec97465c3a1b21059ecf970d387b4e9af6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game currency or hacks, directing users to a known malicious redirector URL. The document body and embedded heuristics confirm the intent to trick users into visiting this malicious link, likely as part of a phishing or scam campaign. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-download-game-hack In PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/pokemon-go-free-in-app-purchases_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/which-pubg-uc-is-best_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/rbxoffers-com-free-robux_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_004_off0000507a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x507A 26080 bytes
SHA-256: 28495f720c94369998a66c943dfb61a9e42635993c5c2de0f34901fd8870a79f
font_01_sfnt_off00008d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1A 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2C 18824 bytes
SHA-256: 8406cb1c38774726d91b6a9fb5333918f35ff34bd7dcb56cd5a50b6af28a82ee

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