Malicious PDF — malware analysis report

Static analysis result for SHA-256 15faed617237c783…

MALICIOUS

PDF

79.2 KB Created: 2021-03-18 14:32:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d57c1f21909aa5aad6cc5ad9aec6994 SHA-1: 778521d0b12ef8ff46d7e982ce13a9fdd1803472 SHA-256: 15faed617237c783ea103045f5f9f39afc43f3033b543ab3c865c121ad00cf3e
136 Risk Score

Malware Insights

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

The PDF file contains a lure to download a password-protected archive, indicated by the 'SE_PASSWORD_ARCHIVE_LURE' heuristic. The embedded URL 'https://xezojetit.ru/award?keyword=brief+publicitario+ejemplo+pdf' is likely part of this social engineering attempt. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://xezojetit.ru/award?keyword=brief+publicitario+ejemplo+pdf
    • https://cdn-cms.f-static.net/uploads/4368752/normal_6033fc6dbb503.pdf
    • https://static.s123-cdn-static.com/uploads/4422637/normal_5fe4f63937b0d.pdf
    • https://cdn-cms.f-static.net/uploads/4491946/normal_600fe45d9b2f9.pdf
    • http://bosegabowatitup.iblogger.org/pudelejaxabuluwo.pdf
    • https://cdn-cms.f-static.net/uploads/4481170/normal_602cfe00ead0e.pdf
    • https://static.s123-cdn-static.com/uploads/4419236/normal_5fe4efce8c43f.pdf
    • https://cdn-cms.f-static.net/uploads/4374207/normal_6052dbf46414f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zufaxepixiguxax/tavitenam.pdf
    • https://s3.amazonaws.com/zalomi/jatakizeximugupuvewakoso.pdf
    • https://s3.amazonaws.com/fajixe/14309779021.pdf
    • https://s3.amazonaws.com/netinuwa/animasi_bergerak_terima_kasih_powerpoint.pdf
    • https://s3.amazonaws.com/jaxesabi/how_to_be_a_quick_turn_real_estate_millionaire.pdf
    • https://s3.amazonaws.com/potofaw/dadilasudajurarutilidijuz.pdf
    • https://s3.amazonaws.com/kifutizijebuj/application_of_amylase_in_food_industry.pdf
    • https://s3.amazonaws.com/wudibirewuduto/wuzagozediku.pdf
    • http://labukifured.epizy.com/google_data_studio_funnel_report.pdf
    • http://fidetilodekaser.epizy.com/xizugaxiporebagipudex.pdf
    • https://s3.amazonaws.com/wusigipufuvowix/vewivoxefedasajidoz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f569.bin
bc339afb1d4bc67b8b99d74300afa46914045eb28deadc1f43461a17015bc921
pdf-font-stream PDF embedded font (sfnt) at offset 0xF569 5388 bytes
font_01_sfnt_off000107a4.bin
8605ebe96c85b252719b5afba1e370fcf24973ed3a171bdc447668c80c560b84
pdf-font-stream PDF embedded font (sfnt) at offset 0x107A4 11928 bytes