Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d394950ad909a7b…

MALICIOUS

PDF

83.7 KB Created: 2021-04-09 11:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3fec007c8478fd5ef3f1a04c53d4c94d SHA-1: c7813dad87b474b2dc786fdcb99407f3bfa5943b SHA-256: 5d394950ad909a7b92e8fd455dc1c0acf0119945b6b29128c64db719f3b7b63d
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/strik?utm_term=juki+ddl-5550n-7+price+in+bangladesh PDF link annotation
    • http://zegererevez.medianewsonline.com/definition_of_waste_management.pdfIn PDF document text
    • https://buvupoxiku.weebly.com/uploads/1/3/4/3/134329971/8447358.pdfIn PDF document text
    • https://roxoxadedetep.weebly.com/uploads/1/3/4/5/134520556/7863328.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/wobuzisibal/13774855383.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/net_framework_2._0_32_bit_full.pdfIn PDF document text
    • http://julasame.epizy.com/79078268042.pdfIn PDF document text
    • http://zajupulavofawi.myartsonline.com/pineda.pdfIn PDF document text
    • http://beliraguw.onlinewebshop.net/26959957075.pdfIn PDF document text
    • http://fokodema.epizy.com/kirtan_ki_hai_raat_baba_song.pdfIn PDF document text
    • http://wixobopi.rf.gd/xuxevedagizixizasikamiw.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/huawei_p_smart_2019_android_10_beta.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/41335356140.pdfIn PDF document text
    • http://bokonukavebuso.rf.gd/can_you_use_fuji_instax_mini_film_in_polaroid_300.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/lumaporekevakomu.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/fur_elise_piano_sheet_music_musescore.pdfIn PDF document text
    • http://zipulosi.atwebpages.com/download_alcoro_em_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/does_tricare_pay_for_counseling.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/zuvupadujobowiw.pdfIn PDF document text
    • http://bonerewutejipa.rf.gd/adjectival_phrases_exercises_with_answers.pdfIn PDF document text
    • http://matazovazer.epizy.com/tikunasipijavemix.pdfIn PDF document text
    • http://pumejusatojajeg.rf.gd/fedulegamumigavurutowibe.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/binomial_expansion_for_fractional_powers_proof.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzakob/totidewiro.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/podagaf.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/functionalist_theory_of_development.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10596 5904 bytes
SHA-256: 235dad5465cbdf70ca4982900da11e0ca0e6ba76c533aab3e84e2dfe927d31c3
font_01_sfnt_off000119b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B4 11656 bytes
SHA-256: 56bc9930a66ee8c6d22b7797c339e13c8e63bcd13fab3284a2b13467c4864cad

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