Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9e2d4b7036ec28…

MALICIOUS

PDF

81.6 KB Created: 2021-04-04 04:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75ce8754c63295d79b25e5082de8bff3 SHA-1: b9d74b346169db2b4580ca28cb5c725636da5dad SHA-256: fe9e2d4b7036ec28b48bdc822f1467b8cf427308aaa38e1d91feb4c94775eba3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to search queries, and an embedded URI points to a suspicious domain, likely intended to host phishing content or a further payload. No scripts were extracted, but the PDF structure itself facilitated the inclusion of the malicious URI.

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://xezojetit.ru/strik?utm_term=what+is+healthfirst+essential+plan
    • https://cdn-cms.f-static.net/uploads/4421630/normal_6012e122530a4.pdf
    • http://gigazukiwizave.22web.org/pelekidonesuliroxitilaw.pdf
    • http://help-copyrightviolationhelpcenter.com/document_control_templatevldbc.pdf
    • https://static.s123-cdn-static.com/uploads/4371787/normal_60043e93f3d77.pdf
    • http://idealslimitaly-ufficiale.site/harga_g-shock_ga-100-1a1drpkdpp.pdf
    • http://italysummer.fun/pupixutapuligokepjzh4.pdf
    • https://static.s123-cdn-static.com/uploads/4410986/normal_5fe4807139a42.pdf
    • http://getdouche.xyz/17754951737mszez.pdf
    • http://kyrgyztours.com/baxalukamivano7k9z.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/dazovosugev/tawigasiragibalunetoditem.pdf
    • https://uploads.strikinglycdn.com/files/183a2b55-f1c2-4507-9a99-389cd293d4f6/99552967836.pdf
    • https://uploads.strikinglycdn.com/files/233ec8ac-4bfa-4028-88e7-0a37c8bdc8d1/how_to_write_an_essay_about_themes_in_a_book.pdf
    • https://uploads.strikinglycdn.com/files/d0a72da8-9e57-4e0c-bf7d-ae9298dea08f/32536723967.pdf
    • https://uploads.strikinglycdn.com/files/4becc072-5fff-4d65-8a84-38742f533c57/15540367085.pdf
    • https://uploads.strikinglycdn.com/files/8cdbd0d3-2f72-402f-aaf8-d7ddf21a0f02/74806496248.pdf
    • http://dazewedoxagaxaz.epizy.com/40299772428.pdf
    • https://s3.amazonaws.com/dojivewobasuval/learn_r_for_data_science_free.pdf
    • https://s3.amazonaws.com/bewibiwat/passenger_endorsement_test_answers.pdf
    • https://s3.amazonaws.com/sosupejuxofedo/tilepokekikovopinuzeji.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f412.bin
bfd46f335791aab9a7d21ae5344c653506d2bd2aa4b1b5437af1c2b528262ded		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF412 4680 bytes
font_01_sfnt_off000103e3.bin
2c6986bf5d47145f534be57389cc33be378d8d9de0fe336341895601943f9f09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 11308 bytes
font_02_sfnt_off00012a85.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A85 4324 bytes

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