Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9903d314e306582…

MALICIOUS

PDF

72.5 KB Created: 2020-11-17 20:26:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 200eebf11637f2fab088c79544d01500 SHA-1: 217b3295aec1e3044cbf101375b2cb8cebb44cf9 SHA-256: a9903d314e306582b9daba238458d2302e9663f09ff49647c47cbcea221de30e
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 0.9995

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://trafffi.ru/strik?utm_term=la+guerre+de+troie+n+aura+pas+lieu+r%25C3%25A9sum%25C3%25A9 PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/85cd62b8-7004-4e2c-b03e-911cda63fd67/5g_male_pills_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5daa0020-95e3-4ca9-8a73-40592492c5a8/the_real_act_prep_guide_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/6675790180.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/understanding_and_using_english_grammar_betty_azar.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/31826768860.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/lewis_structure_worksheet_3.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/58804043336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd05a56-17fa-419d-94d3-1f4604b4d140/58793171170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5936c208-7962-4511-9903-1a99320813ae/77369544961.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/dress_up_unblocked_game.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_off0000d7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D1 5360 bytes
SHA-256: 980c84befac0edd9caee673076bac457187e479ea8dc382ae089e88f3b7c9818
font_01_sfnt_off0000e9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 13056 bytes
SHA-256: fd43fb783db52d61f0241c47d70dbfca4060e0c0d7df66514e24ad8496b30147

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