Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a303afb3e3c3d7…

MALICIOUS

PDF

73.0 KB Created: 2020-12-31 09:19:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8bed908e2cede83f2b4aa821bcab69c7 SHA-1: b61ab7103b5d272d127305907173449f5e83797e SHA-256: 55a303afb3e3c3d7fb78d601910ac638cefb01e832dd2d3ff1d9a7bf87b58517
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 0.9997

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/strik?utm_term=aerox+155+abs+top+speed PDF link annotation
    • https://cdn.sqhk.co/bozadukopufu/1hhjhDk/final_fantasy_4_the_after_years_wiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426072/normal_5fca469f857a9.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/ihadjdR/71018347351.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/UhdcXPZ/zara_home_usa_locations.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/sirilagewuga/bhhs_luxury_collection_websites.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/prism_graphpad_software_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/967234b3-8ea9-4a0c-84d9-24600cfb7526/photo_video_maker_expert_music_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/general_chemistry_2_review_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0bd2f0c-b713-4bff-8254-681232ac5d35/there_once_was_a_tree_a_beautiful_that_grew_in_fairyland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfa998a2-cd97-4228-8118-1271c9b247db/31560084436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e8bb600-6edc-4d99-9a27-eac58ae6358a/tubuvirilapedili.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/gowejodidi.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/notesuwomurupuvojege.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_off0000df79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF79 5292 bytes
SHA-256: ba905628f6c638ee25a41028790bba3d5b1bf7627746562ea9a84211e146408f
font_01_sfnt_off0000f18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18F 11276 bytes
SHA-256: d3fe323cd7bae52cb505800e25b9209779d24229421fd19e51f92a249b695ff2