Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e72af203d512280…

MALICIOUS

PDF

78.5 KB Created: 2021-03-28 22:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d18df6caa195bb6fad17d3ac9a5a454b SHA-1: afad49766feed897f6366c80841e31f1596ea2e2 SHA-256: 9e72af203d512280d3adb9881607b5eedeb8891f45b5e7f245e08b011805596a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though partially corrupted, suggests a lure related to 'Soleus window air conditioner installation' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/strik?utm_term=soleus+window+air+conditioner+installation PDF link annotation
    • http://waxevamebe.22web.org/57829156997.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxodinumoro/cPchcig/zofowopovoxeliwe.pdfIn PDF document text
    • http://hrushch.space/massey_165_hydraulic_pump_removalei0ru.pdfIn PDF document text
    • https://cdn.sqhk.co/supuzeren/XijczSV/new_bhojpuri_song_2019_bol_bam.pdfIn PDF document text
    • http://robertferrell.net/system_engineering_v_chartbuhia.pdfIn PDF document text
    • http://shoop-fe.ru/wuzukuliravezic3hti.pdfIn PDF document text
    • http://rating-bookmaker.ru/il_vangelo_apocrifo_di_giovanni965jj.pdfIn PDF document text
    • https://cdn.sqhk.co/takakakod/ifajitN/schema_branchement_moteur_electrique_monophase_220v.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/nalifij/e_magazine_free.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/dizipadev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67484199-5834-48d1-9de7-2a7549332098/vanity_fair_movie_2018_cast.pdfIn PDF document text
    • http://fisuwadufojotu.rf.gd/zelewuwukasug.pdfIn PDF document text
    • http://vopevufiwi.epizy.com/gakubudufubigokiluta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980326ba-2f74-4e7d-abc0-b7f3f3a64b29/lefidipebegisimorabidagu.pdfIn PDF document text
    • http://sejazoneloteg.epizy.com/play_script_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/pennsylvania_certificate_of_merit_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3dec879-58f7-407b-a912-ad6d5656f28a/chamberlain_security_plus_2.0.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/tujosuvuxawobosumurexub.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/confirmation_charlie_parker_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/computer_hardware_and_networking_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/hardened_steel_file_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/44712366370.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_off0000f76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76A 5128 bytes
SHA-256: fb093799f6ea832e5c5ed0d9cc6bc00b84a5a0c87f8669ccb297ddd09951289c
font_01_sfnt_off000108f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F6 10432 bytes
SHA-256: 0c2ec5311f63597a5e4b58f5a3693130a7970334bb8907a11e434a5a63080bb1

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