Malicious PDF — malware analysis report

Static analysis result for SHA-256 432285616be39925…

MALICIOUS

PDF

74.9 KB Created: 2021-03-16 20:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6c2d046a623a20845bc3c0c2fdeeb4f SHA-1: 26576a2299ab048191c89db2502560e1e9e8b363 SHA-256: 432285616be399251e02475b2ce191177c74a136f9ba8aad9ec49623665fd364
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to web archiving and the authoring application, which could be part of a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://nipisod.ru/123?utm_term=web+archive+er+free
    • https://kukaweferoba.weebly.com/uploads/1/3/4/7/134754127/bevobamarezem.pdf
    • http://vozuzutiwajuzip.getenjoyment.net/what_is_a_normative_question_in_political_science.pdf
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/0094ce89a3fee3f.pdf
    • https://suzexumereda.weebly.com/uploads/1/3/6/0/136051641/7439864.pdf
    • https://static.s123-cdn-static.com/uploads/4485799/normal_5ffec4ab2a8fa.pdf
    • https://static.s123-cdn-static.com/uploads/4402519/normal_5fdd662369edf.pdf
    • https://cdn-cms.f-static.net/uploads/4409257/normal_603511dc8b820.pdf
    • http://kuzexamipapoxip.medianewsonline.com/attack_on_titan_season_2_netflix_canada.pdf
    • http://memowelubi.mygamesonline.org/the_sociology_of_education_a_systematic_analysis_7th_edition.pdf
    • https://wadaletabuj.weebly.com/uploads/1/3/2/6/132695896/jigububolipenitox.pdf
    • http://bagesopabiwub.scienceontheweb.net/58710908747.pdf
    • https://xunedoworevesa.weebly.com/uploads/1/3/1/1/131164322/617048.pdf
    • http://povulofi.mywebcommunity.org/how_to_open_sharp_carousel_microwave_door.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b40729ff-4d72-482b-83e1-71d86cc17162/84878902072.pdf
    • https://uploads.strikinglycdn.com/files/91308cb6-bced-42a2-bff2-8114a076b527/cyberpunk_2077_ps4.pdf
    • https://uploads.strikinglycdn.com/files/f3b4674d-ab6e-4199-b1b2-78b84c6b5432/pascals_triangle_worksheet_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/66181aac-ab16-4986-865c-2d152e7d4805/8498029587.pdf
    • https://uploads.strikinglycdn.com/files/11834d58-55f8-48ad-a0d8-dd4eb26f1f7a/76432868194.pdf
    • https://webarchive.jira.com/wiki/display/Heritrix
    • 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_off0000ea19.bin
87372a5aba23cf46ba36cc1176dae869a4b5b9097d351d66aa0c7afdedf440ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA19 4972 bytes
font_01_sfnt_off0000fb19.bin
7443374e2b5c7d67b7172c2b047feef0689a3041d4e2f1e8f426d4f30a8b8a03
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB19 10516 bytes