Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc715f4fb906ff68…

MALICIOUS

PDF

79.4 KB Created: 2020-12-24 20:10:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08eb1fa075c472483f8d3e79455d761a SHA-1: 1c2c2322087b7c08c7fa846aa353c461be5aa2c4 SHA-256: dc715f4fb906ff68576e1e7b33d7d22a4079b3998d3a8c9b78e550d1f9f999bf
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by a ML classifier and ClamAV, indicating a phishing or trojan payload. The embedded URL suggests a lure for users searching for learning materials, likely to trick them into downloading further malicious content. No scripts were extracted, but the PDF structure and external URL are strong indicators of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafficel.ru/aws?utm_term=learning+python+pdf+2019
    • https://static.s123-cdn-static.com/uploads/4446782/normal_5fc6a2210b76f.pdf
    • https://static.s123-cdn-static.com/uploads/4402250/normal_5fce7b2170be5.pdf
    • https://static.s123-cdn-static.com/uploads/4448733/normal_5fcea67972bab.pdf
    • https://cdn-cms.f-static.net/uploads/4464861/normal_5fb4e4a3b8a07.pdf
    • https://static.s123-cdn-static.com/uploads/4419003/normal_5fdf335abc178.pdf
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5f96bf6d5b4d2.pdf
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8ea378bd6b9.pdf
    • https://static.s123-cdn-static.com/uploads/4374838/normal_5fcf0e75b4b04.pdf
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fdacde6df1e4.pdf
    • https://cdn-cms.f-static.net/uploads/4481282/normal_5faa61ba32fe8.pdf
    • https://cdn-cms.f-static.net/uploads/4474446/normal_5faf95c10f448.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/edbc1a81-3d74-47fe-9a2a-188696223f32/48890326114.pdf
    • https://uploads.strikinglycdn.com/files/ef74e45f-71db-47e8-bea3-2e35509b33cf/6854552131.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f83d.bin
234da0ec97072eddf6de5bcac1e21611977fe6d076890574f73fd3b615e40a7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF83D 5620 bytes
font_01_sfnt_off00010b69.bin
07535422a713a3b1b302bac1aab9164853d6264a5b28e8a6bb0d6c2a769f7e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B69 11380 bytes

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