Malicious PDF — malware analysis report

Static analysis result for SHA-256 116633534fc1d555…

MALICIOUS

PDF

116.1 KB Created: 2021-04-04 12:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5eb2f49da1ff4cd888a33e3405fd667b SHA-1: 71dfa4c26a3e18dfd921883b3cb83f17c2f645d6 SHA-256: 116633534fc1d5552db50844ece0191538a55f63620ab891efd18332f5f350bb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a search result, likely to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, a common tactic for initial access via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dafemum.ru/strik?utm_term=what+is+dependency+theory+all+about
    • https://static.s123-cdn-static.com/uploads/4383147/normal_5fca4b231a66a.pdf
    • http://xuxetosufuzo.getenjoyment.net/63523502872.pdf
    • http://kawlites.online/2006_john_deere_gator_hpx_4x4_top_speed0swwp.pdf
    • http://trudogoliya.online/vufebegaditezifosrt.pdf
    • http://xibomupazone.mypressonline.com/assessment_in_special_education_a_practical_approach_4th_edition.pdf
    • http://fobifisoba.22web.org/kojebivotamidugarasuxakis.pdf
    • http://vetizivonisare.22web.org/mycobacterium_tuberculosis_bovis.pdf
    • https://cdn-cms.f-static.net/uploads/4477877/normal_605d0a940b25b.pdf
    • http://puximosuse.iblogger.org/how_do_i_program_my_philips_remote_to_my_tv.pdf
    • https://static.s123-cdn-static.com/uploads/4380674/normal_5fcaa9640bb3e.pdf
    • https://static.s123-cdn-static.com/uploads/4387565/normal_5fe5a31e40ac9.pdf
    • https://cdn-cms.f-static.net/uploads/4450240/normal_606910c0b5240.pdf
    • http://gowisogodedugu.22web.org/agile_testing_interview_questions_answers.pdf
    • http://devicesprotectionforusers.site/don_juan_mexican_restaurant_tyler_tx18rzq.pdf
    • http://juzufezike.mygamesonline.org/zizonilison.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zepifudoxapo/jobixevobag.pdf
    • https://s3.amazonaws.com/fajujiju/elastic_and_inelastic_collision_lab_report.pdf
    • https://s3.amazonaws.com/tajimipojimo/chidambaram_temple_photos.pdf
    • https://s3.amazonaws.com/sirilagewuga/mechanism_of_action_of_antitubercular_drugs.pdf
    • http://pukowevuvifa.rf.gd/unreal_engine_4_2d_top_down_tutorial.pdf
    • https://s3.amazonaws.com/tudawufed/90926428475.pdf
    • http://runuwug.myartsonline.com/blanche_neige_et_sept_nains.pdf
    • http://datavofunuta.epizy.com/gutasi.pdf
    • http://tosogaxaf.rf.gd/inadvertent_disclosure_of_personal_information.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000170ac.bin
5e5782306943a933fc5986b1fb3172e5f01e74d8cddeec81f59a6affa5c6c8ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x170AC 5416 bytes
font_01_sfnt_off0001831b.bin
6a784a17c28ef08d38ab0c37da309418ccc2539d821ad5b13eba8b070695e344		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1831B 13644 bytes
font_02_sfnt_off0001ae66.bin
99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE66 16060 bytes

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