Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2726d094d5ec958…

MALICIOUS

PDF

76.7 KB Created: 2021-04-06 11:44:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5d730544795b3719cbc64024e544d34c SHA-1: e8022de6ae86d51e695f62814d69da4e35f06374 SHA-256: a2726d094d5ec9582653cf85ed4804d8d3d13bb4c4ee5bf43277868319ebb1dd
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 embedded URL points to a suspicious domain, likely used for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, consistent with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=black+magic+spells+dragon+city+use PDF link annotation
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/xemox-vurereluvoviwo-gixifukaz-dazipukit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451565/normal_604a5cdf5be20.pdfIn PDF document text
    • http://euromarket.pro/fukolupasasenebolofihskra.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/bjdqibW/mega_millions_winning_numbers_history.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/KOogjjf/gebunibu.pdfIn PDF document text
    • http://in-arenas.com/if_and_unless_grammar_exercises58umt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421781/normal_5feec2c310fc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417534/normal_5fcc5f840bcc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480905/normal_60500eef203b7.pdfIn PDF document text
    • http://euroshopmn.space/47083079944ukwl5.pdfIn PDF document text
    • http://leree4.club/rimitarudepuxofok1b7d.pdfIn PDF document text
    • http://zogometemo.sportsontheweb.net/change_to_word_online_converter.pdfIn PDF document text
    • https://rebusisi.weebly.com/uploads/1/3/4/0/134017700/zidefajadusolajezimo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484623/normal_5fde7567b4c95.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/rodakarugupoko/how_to_reset_schlage_sense.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/kesubu.pdfIn PDF document text
    • http://kebenubes.onlinewebshop.net/cambodian_phrases.pdfIn PDF document text
    • http://zisukuvi.atwebpages.com/bajaj_pulsar_135_spare_parts_price_list.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/bupaxixijax.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/china_visa_application_form_for_bangladeshi_national.pdfIn PDF document text
    • http://muluwokixo.onlinewebshop.net/musarawi.pdfIn PDF document text
    • http://gamelaluwer.myartsonline.com/how_to_open_basket_in_farberware_air_fryer.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/minutes_for_disciplinary_hearing_template.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_off0000ebdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDB 5608 bytes
SHA-256: 7846123809daf4bbe370e750d4b68b7e37a89f9cd393022861440befdf758a53
font_01_sfnt_off0000feef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEF 11300 bytes
SHA-256: 9bc8b72e032abebdf1bfb5493e26e14549c86050e3007ce07540c86a427f34e6

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