Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52f7991acf22836…

MALICIOUS

PDF

43.3 KB Created: 2021-05-14 19:08:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e5087d6b217bcb1c04cf2fb509f43377 SHA-1: 8565f57195304397100495513370cb258b762420 SHA-256: d52f7991acf2283673507b118e2456fb8eb53f00f2563da20d20446f34792835
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that promise free Robux or game hacks, a common lure for phishing or malware distribution. The 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_GAME_HACK_REDIRECT_LURE' heuristics indicate that these links lead to known malicious infrastructure. While no scripts were explicitly extracted, the document structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/431946152/websites-that-give-you-free-robux-game-hack In PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/mc-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_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
stream_003_off00004d0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0A 24228 bytes
SHA-256: d99cc6a8bd454a67816d43811d8634093a672164112909ec1fbab0b1bffd2e1e
stream_004_off000084a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x84A4 19108 bytes
SHA-256: 6861c41ba735d8f67874cff181a99ea6f9d656df5851b3483f669947649d93e1

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