Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca5c1f3a25300548…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 02:16:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4b3beb93b20a7374c32622d1c88eb3c6 SHA-1: 31e36a12bbb80ba05f03a75126f426d338204371 SHA-256: ca5c1f3a253005485f4261dfc0191739298a2c460216400b1cb2862f49270728
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to a known malicious redirector, disguised as free game hacks and generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or exploitation. The presence of a clipboard command lure suggests an attempt to trick users into executing commands, potentially to download and run a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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 http://netcdn.co/app/431946152/pastebin-raw-free-robux-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/seven-roblox-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-roblox-in-epping_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/lollipop-simulator-hack-sckitp-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/guide--coin-master-free-tips_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F97 22068 bytes
SHA-256: 042f86fd89c562bdb743d591bce2c2ab5b72017bae26d64510a459e3d0a0c8d9
font_01_sfnt_off000060af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 19260 bytes
SHA-256: a8c41b54fa288548ddbe0a7222fabcc242236bff3345324573cf79aaee5ef672

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