Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8aa66c7a1bc79ec…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 13:19:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b4ac5fa36a6c1360082a394398754345 SHA-1: f37d1c0d618d9a9a3a3998e462cfa20f244675de SHA-256: d8aa66c7a1bc79ecb27889eabdae79eb8beef9569768042a619a4e1c7f05e0f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free Robux and game hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/free-robux-for-downloading-apps-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to potentially malicious content or further downloads, aligning with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 http://netcdn.co/app/431946152/free-robux-for-downloading-apps-game-hack In PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-roblox-audio-sounds-songs-chill-bill_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-do-people-get-hacked-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-nike-free-auttaucollant_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-hack-roblox-jailbreak-beginner_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/hack-de-roblox-robux-infinito_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-professionally-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/how-to-get-robux-fast-no-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/bloxburg-com-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-gift-card-codes-free-codes_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/hacker-egg-letters-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/secret-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-live-stream-now_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/epic-hair-free-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/how-to-get-free-robux-without-hacking_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/dantdm-com-free-account-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/tycoon-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/roblox-command-tools-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 21632 bytes
SHA-256: c175e480d93e0fca680076b4e347d86e9d00657ccce2c7ec8399838df1654117
font_01_sfnt_off000060c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C3 19592 bytes
SHA-256: aac1bbe2692da047784274d7f27411eea7136d4bb38e5e5eae858b3563c2d16b

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