Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da52a19e77d38ca…

MALICIOUS

PDF

76.5 KB Created: 2021-03-06 13:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b9ae188ae7815950691c9e8c0294660 SHA-1: 77aec61ead24f47a3e1f0df1a419e6ae1fea3ba5 SHA-256: 0da52a19e77d38ca58c0329477f28dc4e984c5862978c41a74dc46e0910d3750
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'adverbs and adjectives list of words'. The presence of multiple external URLs indicates an attempt to redirect the user to potentially malicious content, likely for phishing or malware distribution.

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://jumiwimov.ru/123?utm_term=adverbs+and+adjectives+list+of+words
    • https://zibezalobe.weebly.com/uploads/1/3/4/5/134529300/6271628.pdf
    • http://wewofif.scienceontheweb.net/22930936450.pdf
    • http://rumurel.mywebcommunity.org/the_golfing_machine_book.pdf
    • http://cmbespaceclient.xyz/lutizajinoxivoloxejorigbi7si.pdf
    • http://gouliwer.online/84343101806y3ggz.pdf
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/13e24446a9f9ecd.pdf
    • http://naliputa.mywebcommunity.org/why_is_arbonne_not_a_pyramid_scheme.pdf
    • http://klosheff.xyz/the_room_2019_rotten_tomatoesfh9zd.pdf
    • http://xojuxelase.medianewsonline.com/53240151146.pdf
    • http://fresh-ita.fun/19403810192qvv4q.pdf
    • http://mutujejeturuduf.medianewsonline.com/fire_and_ice_perfume_walgreens.pdf
    • http://vijexibat.mywebcommunity.org/can_you_name_all_50_states.pdf
    • http://kismyketio.com/how_do_i_request_a_review_on_facebookgqkhn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://6b52f5a6-db44-4d3e-8337-ab33c729cb13.filesusr.com/ugd/f4de5e_74f640578f6444a2b751366b3c895416.pdf?index=true
    • https://uploads.strikinglycdn.com/files/acec7def-38ba-4d25-bafb-67b53cc9baeb/57093686746.pdf
    • http://satawakerexe.atwebpages.com/fedobidufuzaza.pdf
    • https://a04ad255-06d6-4b17-97e7-91173d300295.filesusr.com/ugd/6864df_b26227ea0f9d48e89b5ea8b6a5d45f14.pdf?index=true
    • https://uploads.strikinglycdn.com/files/136beb6c-7380-41d2-972a-2a4290015f9d/why_is_it_so_important_for_antigone_to_bury_her_brother.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e10e.bin
1e8ae3899999cc2bec6a8aa34dc5ed937801db49d557ad6074b19dbea3a03f0a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE10E 5160 bytes
font_01_sfnt_off0000f2af.bin
9fc078d412e20940e2c7eecbc2f44accf5c400bc1e1037f8f32c68dd0d75a925
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AF 10408 bytes
font_02_sfnt_off0001162b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x1162B 4324 bytes