Malicious PDF — malware analysis report

Static analysis result for SHA-256 58de905d90e90118…

MALICIOUS

PDF

47.7 KB Created: 2021-05-11 05:45:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: af64ff15abc674e5540ea9c8413f0bc1 SHA-1: cfd2aa8b2608639e31771f31d7c0aed94dfa3692 SHA-256: 58de905d90e9011890d3b6b3cb33faffd8da4685cfac108d53a4192e7c1f2c1d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a heuristic firing for ML_NYX_PDF_MALICIOUS, indicating a high probability of malicious intent. The document body and heuristics suggest a lure to download content, likely a second-stage payload, from the external URLs. No scripts were extracted, limiting the analysis of direct execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/479516143/free-minecraft-mods-game-hack PDF link annotation
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/roblox-earn_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://elearning.min8blitar.sch.id/__statics/gudangsoal/files/coin-master-map_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cd4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD4 29676 bytes
SHA-256: d7b500fbcc84c676640035a96be43436a6fd27150df91976181e279f89cd3771
font_01_sfnt_off00008eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEA 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off0000995d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x995D 17884 bytes
SHA-256: adaa6c4c94b3243dd254ffbddf76305537cf905bb6459c29a6343236798c761b

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