Malicious PDF — malware analysis report

Static analysis result for SHA-256 920703e6c2b403af…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 09:24:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1e1a454085a867f5a85f4bbbb19e4749 SHA-1: d17528955916288145f64934431216c7a6437ca0 SHA-256: 920703e6c2b403af1db0acb3e3f8ffc5dd18588e325731a1f69453a7522ebb0a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free coins". The primary lure URL is https://netcdn.online/app/406889139/coin-master-game-hack-app-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/406889139/coin-master-game-hack-app-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/pubg-uc-deducted_GM1330123889.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/pubg-uc-567_GM1330123889.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spins-generator_GM406889139.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_off00005078.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5078 25676 bytes
SHA-256: 4c4fe64def4ea24a8e9a8f6159d7bba4d1c9125d13cf673d0e8c1de02eee3847
font_01_sfnt_off00008b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B86 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9571 18152 bytes
SHA-256: a9beebf818d5886f30c9f2ca3dea49ae6ba882c6c1da3ca8fee2aac0910a50ab

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