Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa115b285c6a11d7…

MALICIOUS

PDF

111.1 KB Created: 2021-05-24 14:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9afa8bbee144fb7b66fc32180e305537 SHA-1: b214e87aad5d8362f173e94a9e3e240e7a183cfa SHA-256: aa115b285c6a11d785be9cd61cbec35208dbd754e78ff83857bcf6b0aa99b05b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=what+is+dli+in+unilag PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443362/normal_6035fe36cacb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471253/normal_60322eabc6d3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485943/normal_603be5742ba96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zolerazowubow/el_factor_fred_libro_completo_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/android_api_26_migration.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/troy_bilt_pony_mower_deck_belt_routing.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/honda_maintenance_code_b_127.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/abdominal_paracentesis_procedure_note_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95661d3b-2c48-48b0-933f-f13b50ffa024/wuratejeditaba.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/fawurasodafewoxazezivuga.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/64732127863.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcce58a2-3eb9-462b-9471-330a09fdf098/a_different_mirror_a_history_of_multicultural_america_chapter_5_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/file_colorizer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/toro_724_snowthrower_model_38050_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b99d8ce-a638-48de-8542-2d29bec30821/painting_activities_for_12_year_olds.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/28417843100.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/sd_card_corrupted_cannot_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8eacb4-6309-4501-9e23-de93ac975466/58960501631.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/gozekuduwujegole.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A91 4656 bytes
SHA-256: e8f1df1cf7f9f520a6693c665e5d6289f10d02ab98a852b126c6ee0b6de5a9d1
font_01_sfnt_off00017a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A51 11296 bytes
SHA-256: bd484a0e169e36048310b91191b011c47a4f5e1e5362c6791b52b88d6cc6d015
font_02_sfnt_off0001a0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A0C3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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