Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec6a9c25e40e5b0…

MALICIOUS

PDF

67.7 KB Created: 2021-03-17 20:15:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25f925d386ab96b6ca0139a5e6c5a897 SHA-1: 7e47cd3daa1272cf625994087a3da5e3c2d40da2 SHA-256: fec6a9c25e40e5b0892ac3ef853de13af12f25c853c4216331e316fd4c3a96c0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI was found embedded within the document, pointing to a suspicious domain. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of an external URL strongly suggests a phishing or credential harvesting attempt.

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
  • 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://xezojetit.ru/strik?utm_term=twitter+sportsnet+650
    • http://xufelaketodo.getenjoyment.net/51539462843.pdf
    • http://jawirigagoboni.iblogger.org/why_is_my_shark_steam_mop_not_getting_hot.pdf
    • http://komaxinatobofe.medianewsonline.com/liminal_thinking_review.pdf
    • http://junumidutuzakox.getenjoyment.net/how_to_troubleshoot_a_thermostat.pdf
    • http://trastenmyqort.online/business_management_10th_editionq4hba.pdf
    • http://bomepufibawil.scienceontheweb.net/marvin_harris_the_rise_of_anthropological_theory.pdf
    • http://private-channel.site/economic_vocabulary_activity_chapter_8_crossword_answersckzof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dufojamimusim.atwebpages.com/23676531798.pdf
    • https://a694a867-b0fa-45cd-b082-7f9abf80b1a7.filesusr.com/ugd/430cb2_e5f37947b0cb4f73878567fe1b90fc8c.pdf?index=true
    • https://s3.amazonaws.com/dosipive/los_tucanes_de_tijuana_discografia_descargar_mega.pdf
    • http://vamavaremimot.atwebpages.com/protected_areas_in_ghana.pdf
    • http://vexabimumemig.atwebpages.com/patrick_fitzpatrick_advanced_calculus.pdf
    • http://kazigolukujo.epizy.com/detective_conan_opening_piano_sheet.pdf
    • https://4b67404f-136a-46a0-9cf3-151f2d38faab.filesusr.com/ugd/241fd5_26c043a141b944698f5ec82cccfbb0a7.pdf?index=true
    • https://s3.amazonaws.com/mixanaz/zakanudifana.pdf
    • https://s3.amazonaws.com/lixisariwulo/kaginowali.pdf
    • http://gipumupanaw.rf.gd/wenemudujavef.pdf
    • http://pasifowon.atwebpages.com/67227563958.pdf
    • http://dekifovep.epizy.com/coming_soon_page_template_html5_free.pdf
    • http://xemunebo.atwebpages.com/academic_writing_skills_1_teacher_manual.pdf
    • https://s3.amazonaws.com/vezumobigodub/semotalipevenibofoniporig.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfa6.bin
0f7edb666546f098edc9a317ec75539d0de2b0045dd18e43caecfabcca724e9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA6 5032 bytes
font_01_sfnt_off0000e0f1.bin
f104ec9cb319b862e816a5898f23ab966815d97dd0b8d230253dec01c4a34c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F1 9080 bytes

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