Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d96e2766779b6e7…

MALICIOUS

PDF

65.8 KB Created: 2020-11-29 10:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ff2892f33d6edfbab474f8d3a96265d7 SHA-1: 0b265bd1c46ea0b57cb083ce6964acf386ee6c72 SHA-256: 8d96e2766779b6e7c129cc10195e5126d473fd09f5d15035a5872e17b7e11795
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/aws?utm_term=present+perfect+tense+grade+5+worksheet+pdf PDF link annotation
    • https://zurareren.weebly.com/uploads/1/3/4/5/134583426/46e172223.pdfIn PDF document text
    • https://zefipomez.weebly.com/uploads/1/3/4/8/134882075/xuxununizabulofa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/kuziza.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/21907974867.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/rosario_de_las_lagrimas_de_maria.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/garuda_gamana_tava_song_lyrics_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/36887681157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42c937e-9748-440a-a96c-8e8585a89403/great_transformation_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/sterling_cutlass_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e01305b9-d139-41fe-9d40-1bbc8ea7c2a4/56914897519.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000add7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD7 5668 bytes
SHA-256: 428f937a80448068f234c90e0c5ec4e42db93f1c7f0479ae830496db08116368
font_01_sfnt_off0000c133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC133 10080 bytes
SHA-256: db3cbe2e3a0478387a85ba4bf04711fc0caecd8882d6242a29b557f34cccb4a6
font_02_sfnt_off0000e3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E1 16028 bytes
SHA-256: 3e66ce8c90719045bf8f6c8d5f716325bbce29c89c8399c9e71e7e90b46a9b16