Malicious PDF — malware analysis report

Static analysis result for SHA-256 94cbc1369c189397…

MALICIOUS

PDF

33.7 KB Created: 2021-06-30 00:41:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 68c4617f12b6b5fb8ff9aa811f0d9003 SHA-1: ac87ec1abc316f5823934e736fd146b57f45956e SHA-256: 94cbc1369c1893971d72fad5ac9405b36845c001ed05c33754c2ef3b22dc49d6
260 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and a link farm, disguised as game hacks and generators. The document body and heuristics indicate a lure to click these links, which likely leads to the download and execution of a second-stage payload. The presence of a clipboard command lure suggests an attempt to trick the user into executing commands, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-crack-hack-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/free-gfx-render-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-and-tix-for-real_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-jump-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblub-for-free-on-roblox-100-working-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-roblox-robux-with-cheat-engine-66_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-no-waiting-pastebin_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-free-play-no-download-login_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/medieval-hood-roblox-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-links-free-spins_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_off00002e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4E 22164 bytes
SHA-256: 7820298b998cdb5f339d1164f244fbc6a8bb41914bb915ab343ac426ce31c003
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 18656 bytes
SHA-256: b3cbcb1f28cb169f25b3deb9061794e2f63bbd8c90cccbd22312c1243a5da49a

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