Malicious PDF — malware analysis report

Static analysis result for SHA-256 773726633a28b2ab…

MALICIOUS

PDF

75.8 KB Created: 2021-03-31 07:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6422976ea054205a7ae110f77118f954 SHA-1: ea72c5f6c48418f771257c1de58c7a0d7d0601ad SHA-256: 773726633a28b2ab9f082af4c447407b894f572dd5e0dd50e993fa21684ee3c9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to employee pensions. The presence of multiple external URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/aws?utm_term=do+disney+employees+get+a+pension
    • https://cdn.sqhk.co/veleviziwew/ig75VHj/takeout_restaurants_open_24_hours.pdf
    • https://cdn.sqhk.co/madagijoj/R7bjhgj/45425688191.pdf
    • http://xonerorobigeke.iblogger.org/71109769983.pdf
    • https://cdn.sqhk.co/xoberuweri/bcken7O/dijokebarofasesuvefe.pdf
    • https://cdn.sqhk.co/mojafefegamo/v7YZ4ha/27894364489.pdf
    • https://cdn.sqhk.co/towinomer/chdgfhg/wosobesuvedavutaxo.pdf
    • https://cdn.sqhk.co/nejisakatok/h7VNMjb/63237837235.pdf
    • https://cdn.sqhk.co/tusifefovozu/esiff1r/bosch_laser_distance_meter_service_center.pdf
    • https://cdn.sqhk.co/rolaravez/yihovie/liverpool_football_club_latest_news_daily_mirror_online.pdf
    • http://delinapod.mypressonline.com/45229335984.pdf
    • https://cdn.sqhk.co/didatife/hiaiihj/16519643883.pdf
    • http://xexapitanegis.getenjoyment.net/radakizojemixa.pdf
    • https://cdn.sqhk.co/gubusase/gjhggdo/powikami.pdf
    • https://cdn.sqhk.co/wuvukidovime/ghofcAm/zajizuloleroxupafoz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vobisobopimab.epizy.com/5492535058.pdf
    • http://tosefiwaniw.rf.gd/de_stijl_manifesto_1920.pdf
    • http://sawesupunozigiv.atwebpages.com/kezazopamewidu.pdf
    • http://gogefesepokap.epizy.com/bsc_1st_year_maths_book_solution_download.pdf
    • https://s3.amazonaws.com/vekodupiwarobi/15185523428.pdf
    • http://wuxininozikup.rf.gd/7561647918.pdf
    • https://s3.amazonaws.com/tesotiwapax/2932189962.pdf
    • https://s3.amazonaws.com/fotepopunaj/how_to_create_consolidated_report_in_excel.pdf
    • https://s3.amazonaws.com/genukopapovixo/cash_flow_template.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_off0000e8f4.bin
c15159298d4193ad9bafca4bbf05919796e857b7bb395e31d558501608d9d8b1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F4 5284 bytes
font_01_sfnt_off0000faea.bin
28df823b6e12127aedbd3a9869c576eef1e272208c74d6ace207b2a80d2e9388
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEA 11408 bytes