Malicious PDF — malware analysis report

Static analysis result for SHA-256 471815d38ebaeeaf…

MALICIOUS

PDF

80.9 KB Created: 2021-03-16 22:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0aed9f2eb5645f187263e2a68eed30a SHA-1: 1cd06aef34b85e61b762454afa3701a5033b8c6f SHA-256: 471815d38ebaeeaf9175b3dac7c9e26b8d2716abe1a726ca3fe0f6a61fe3f85f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the nature of the detection and the embedded URI suggest it is designed to redirect users to malicious content.

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://druttle.ru/wix?keyword=capitulo+5a+realidades+1+answers+page+159
    • https://cdn.sqhk.co/ranemagesoga/PrijkEV/jomudifotixogi.pdf
    • https://cdn.sqhk.co/rogolafu/sugiDW5/rumojavav.pdf
    • https://cdn.sqhk.co/xisapabo/oBnhdjK/65386263666.pdf
    • https://cdn.sqhk.co/fagaxirupunu/b0igjiB/31593043073.pdf
    • http://retenenu.iblogger.org/english_grammar_translation_to_tamil_free_download.pdf
    • https://cdn.sqhk.co/talokelom/uigjhbz/eye_ear_nose_and_throat_doctor_name.pdf
    • http://tejidetegowewi.iblogger.org/fifafurerixizu.pdf
    • https://cdn.sqhk.co/vavegewumur/jwmiilk/47638919125.pdf
    • https://cdn.sqhk.co/sepovili/eiaO3je/burifuzabezufureboxokefak.pdf
    • https://cdn.sqhk.co/xixujipum/gfgc4jh/bibowutisujufepusuwipu.pdf
    • https://cdn.sqhk.co/sisuriwul/ctZhhgj/zivate.pdf
    • http://rowozogano.22web.org/pomafajomos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d7419e41-a83c-4b83-8dbf-61e5e4ca6a28/ge_spacemaker_xl1800_over_the_range_microwave_oven.pdf
    • http://babazemo.epizy.com/how_to_dna_test_your_horse.pdf
    • http://mudalulox.epizy.com/solving_cube_root_equations_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/e36f38bc-8aff-444f-99d8-ae56894156ad/biwolex.pdf
    • http://nowopuxi.epizy.com/arya_2_movie_in_tamil.pdf
    • http://lemaponu.rf.gd/honda_civic_repair_manual_2008.pdf
    • https://uploads.strikinglycdn.com/files/305f5b1a-15f1-47d7-a01c-92b921d30a09/bodewakekosajogem.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_off0000fca2.bin
828e7be20dea98af5cdcd6cc75d22ddeacacf0f924e3ac61654cc9773dc48c76
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA2 5456 bytes
font_01_sfnt_off00010f4e.bin
dd7ed8085ae1fbbb20789963b471f2cf4640027eb6c37481df7f7d896a48310e
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4E 11664 bytes