Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c6c2d60d6af852…

MALICIOUS

PDF

65.9 KB Created: 2020-12-17 17:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 266ef0e7b3521f0743260514a0837abe SHA-1: cdd8313ff667260bc1dee352f8fffe0d95b62a41 SHA-256: a1c6c2d60d6af8528013e2519eb0361a15c460575b956e017d97e8031951e83d
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a search query, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=what+does+wida+stand+for PDF link annotation
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/d2935.pdfIn PDF document text
    • https://lilugotowo.weebly.com/uploads/1/3/2/7/132711957/7e5a1d8c1a.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/dixibavi.pdfIn PDF document text
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/0d7f2e530979.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec5b29da-9ab8-4a21-9173-3d8e3d6504bb/71633344496.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b538feeefa0c0b63a799/t/5fd73ee0226e9048fad23dc7/1607941857671/kerosene_heater_instruction_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30b2524b06a7eb30d4f82/t/5fcc6e43eb18547f4b7caa7b/1607233092024/26833418731.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/50497211893.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/pugopegug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e665873d-bc9e-4d30-b5a1-8bfb00dcba8e/unit_2_chapter_2_ap_government.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FE 5068 bytes
SHA-256: 0df55b7f73a7c6547419c669b0c17013cd5efc3cc3a89e841b73f6f8c5ec60be
font_01_sfnt_off0000d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74F 10612 bytes
SHA-256: de06e9adf04f7618aa3f9b6981a67e02f3db0c7307faf64763ef2b275fd0faee