Malicious PDF — malware analysis report

Static analysis result for SHA-256 2825123ec18496c7…

MALICIOUS

PDF

74.3 KB Created: 2021-02-27 05:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2f3592f7389d204a7b4c2b1eb2405380 SHA-1: d74aac03bde2a595a2c25c3b60363b4c4de7f1f7 SHA-256: 2825123ec18496c7f6c3cd087590d33d9feaf2c29fbd4cb3adf3817bb83a4670
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'xajibur.ru' suggests the document is designed to redirect the user to a potentially harmful website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely leveraging social engineering to trick the user into visiting the malicious link.

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://xajibur.ru/award?keyword=what+is+the+economic+interdependence PDF link annotation
    • http://zdorovienashevse.xyz/windows_movie_maker_2012_windows_10s364l.pdfIn PDF document text
    • http://spencermcman.us/wezugotesalum74sw.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/djggngh/buvebikogamowedudef.pdfIn PDF document text
    • https://vuzitiruf.weebly.com/uploads/1/3/2/8/132814505/3280493.pdfIn PDF document text
    • http://jesubenodewopob.22web.org/xejivonabapevowobifo.pdfIn PDF document text
    • https://totofogekof.weebly.com/uploads/1/3/5/3/135327731/1330422311cc.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/big_little_lies_song_season_1_episode_4692o3.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/aibgcKN/bokiboladowederefix.pdfIn PDF document text
    • http://kovopajewasenuz.iblogger.org/building_maintenance_checklist_template_free.pdfIn PDF document text
    • http://amst-watch-v1.club/piano_keyboard_images_free_downloadftw2g.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/gghh4nr/290007955.pdfIn PDF document text
    • https://ronogutelujevur.weebly.com/uploads/1/3/5/9/135956648/vofonitagupujenepi.pdfIn PDF document text
    • https://cdn.sqhk.co/dogatefi/jhcghib/gomixujigurofowuxedanoj.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/gonasidupij/sentry_fireproof_safe_1100.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/fupapiluxam.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/endocrine_system_is_made_up_of_which_of_the_following_structures.pdfIn PDF document text
    • http://vovijez.epizy.com/50442179547.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/telugu_movies_list_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/1464048538.pdfIn PDF document text
    • http://tenurusimuxu.epizy.com/emphatic_form_of_adjective.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_off0000e799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 5296 bytes
SHA-256: 9bfa3162d319146a454bcee34940eeffd98069d397e5611fdf3d893cc411345f
font_01_sfnt_off0000f978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF978 9976 bytes
SHA-256: 1dab2c24ffc7a3a8d49c198062dfe170789c084f95d6570087ffa3bcaddd8891

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