Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e2e55f7a93fd00…

MALICIOUS

PDF

79.0 KB Created: 2021-03-22 12:07:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 7e19147ea1ab97bc359b157dc978a1aa SHA-1: 3ea5609d80446e30c53db6fc25482a562ee58a39 SHA-256: 54e2e55f7a93fd00131965ce0baad3ed0c221b13416845ebc80b65ecabf426ca
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support this assessment. Although no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest it's designed to exploit users by directing them to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/wix?keyword=5+examples+of+diffusion+in+everyday+life In PDF document text
    • http://talemine.getenjoyment.net/84153524322.pdfIn PDF document text
    • http://kaboperesepasu.iblogger.org/plant_virology_book.pdfIn PDF document text
    • http://xixizugujixu.iblogger.org/game_counter_strike_pc_for_android.pdfIn PDF document text
    • http://tuwukadinem.mygamesonline.org/a_first_look_at_communication_theory_10th_edition_free_download.pdfIn PDF document text
    • http://jusojixanona.getenjoyment.net/how_to_use_a_plot_diagram.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://momesesewoja.rf.gd/vazukagi.pdfIn PDF document text
    • http://bugixud.epizy.com/oracle_sql_max_date_null.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/valufinidokufazajo.pdfIn PDF document text
    • http://rawozenagi.epizy.com/leagueadda_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/12911425490.pdfIn PDF document text
    • http://vivizegijarugip.epizy.com/78027547499.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/remopudexap.pdfIn PDF document text
    • http://nonusepar.rf.gd/navy_seal_training_camp_california.pdfIn PDF document text
    • http://danobefaxejo.rf.gd/variety_show_adalah.pdfIn PDF document text
    • http://jojudodadanu.epizy.com/voice_recorder_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/ritajati.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/casio_f91w_strap_india.pdfIn PDF document text
    • http://kefujuvaw.epizy.com/jowexifupiwewuzopoduseruw.pdfIn PDF document text
    • http://wepaxilex.epizy.com/eclipse_for_linux_ubuntu_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/xulid.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/dometic_fridge_not_working_on_gas_or_electric.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE955 5248 bytes
SHA-256: d501a5d08726630cbc5a4e07be97a7da16b7db5a356b4067fda129df504d0d3e
font_01_sfnt_off0000fb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1E 10936 bytes
SHA-256: b10336ba56de337ea9ca6fdcd9814ea24d3aef3ffabc5f8137fa9d8506b7c306
font_02_sfnt_off00012070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12070 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378