Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5bca819d6f2b3b5…

MALICIOUS

PDF

94.0 KB Created: 2021-04-06 11:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8b67a518dce67319911e198f0b1417e0 SHA-1: af130ab30304c5f807858726b81ccfd0c6623dde SHA-256: e5bca819d6f2b3b5e96835e42ef8d699f9f35fc3549ec012a3bc6d2bff87112b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'fokemale.ru', which is likely used to host a phishing page or a second-stage payload. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs and the malware detection strongly suggest a malicious intent, likely related to phishing or malware distribution.

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://fokemale.ru/strik?utm_term=south+indian+wedding+vegetarian+food+menu+list PDF link annotation
    • http://miwodenexiz.iblogger.org/puxoderadizuwumil.pdfIn PDF document text
    • http://dopatixa.22web.org/chemical_bonding_worksheet.pdfIn PDF document text
    • http://metazexepajesen.22web.org/gnar_guide_s9.pdfIn PDF document text
    • http://kapubasezo.iblogger.org/lexufin.pdfIn PDF document text
    • http://xapilaradagizo.iblogger.org/nuvobobiwageluvatudofiwor.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/rorives/how_to_find_out_food_stamp_balance_online.pdfIn PDF document text
    • http://navunegovexad.rf.gd/microsoft_project_gantt_chart_labels.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/tour_guide_jobs_in_cape_town.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/46905670196.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/6936461338.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/jitukapomegojakilatuxuror.pdfIn PDF document text
    • http://verepuremi.rf.gd/never_going_back_again_guitar_sheet.pdfIn PDF document text
    • http://pavafisufopu.myartsonline.com/jovafesavesa.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/pepokuzowejakolatisubiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/navumajivowiz.pdfIn PDF document text
    • http://paritoxo.rf.gd/basanti_nach_kannada_song.pdfIn PDF document text
    • http://jebomunebuxod.rf.gd/beautiful_love_victory_worship_chords.pdfIn PDF document text
    • http://gebaruzowulidus.epizy.com/nasodijenezulaxesivin.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/amphibian_deformities_current_state_of_knowledge.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/bipimupuxinofuzuji.pdfIn PDF document text
    • http://nubirumoxid.onlinewebshop.net/emotions_circle_chart.pdfIn PDF document text
    • http://galiwasik.rf.gd/patopavusogisibebigo.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/aviation_week_and_space_technology.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_off00013128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13128 5576 bytes
SHA-256: f6fafd5fe2a751ca5e225788edc265dd62ba6c531bd062973b1e7872ec4ebf81
font_01_sfnt_off0001440d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1440D 11204 bytes
SHA-256: 8dcd83b2a30f9fb2a347045bc88c0a0c6b3e1d4770868f93e6da6836561b2d87

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