Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd2daf4462475b0…

MALICIOUS

PDF

82.1 KB Created: 2021-04-07 23:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9227d7933f238ecbf8856f9af595c3c SHA-1: 20a765adcdaf7c06871c32ebbf0c73c087373fe6 SHA-256: dfd2daf4462475b0b87cbd0db174ea889c2a0d03d52d8a5b367b218152b2cbd2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'xezojetit.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated and unreadable, but the presence of external URLs and the malware detection strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=poulan+wild+thing+2375+carb+adjustment
    • http://bestpriceforukraine.xyz/mokebubukowanovivenulavot6sieh.pdf
    • http://copyrightproblem.com/la_casa_delos_espiritus_resumen92xmq.pdf
    • https://wopadutizibum.weebly.com/uploads/1/3/4/3/134306931/mawixuxofimiwa.pdf
    • https://jivupofa.weebly.com/uploads/1/3/1/4/131406879/2932332.pdf
    • https://tilinonulubun.weebly.com/uploads/1/3/4/6/134614078/1842001.pdf
    • https://gukodelimipexi.weebly.com/uploads/1/3/4/4/134495789/dagiji.pdf
    • http://sethel.xyz/51094777196t876b.pdf
    • http://lnstagram-help-businesss.com/sC4B1vC4B1larC4B1n_basC4B1nC3A7_kuvveti7oyob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sajonagot.rf.gd/kubomukazofuwuzufozidusom.pdf
    • https://3c59ccad-08dd-474b-8af0-a42d91f20399.filesusr.com/ugd/489ff0_62732166106a44e0b736b844cbcdb425.pdf?index=true
    • http://tijopuzotozume.rf.gd/ecology_and_environment_in_telugu.pdf
    • http://zodupubulorak.epizy.com/97836204472.pdf
    • http://koburolamugalo.rf.gd/get_accident_report_online_nyc.pdf
    • https://c84ffda1-e72a-45fa-8ce8-a771970cf326.filesusr.com/ugd/9fd656_d4aeebac746f4434a34f41c2e2a6be3b.pdf?index=true
    • http://ninonasoligu.rf.gd/is_the_moca_test_free.pdf
    • http://fobexegedun.epizy.com/answerable_meaning_origin.pdf
    • http://pasezuj.rf.gd/sri_bhagavatam_telugu.pdf
    • http://jidagizonan.epizy.com/laboratory_diagnosis_of_myocardial_infarction.pdf
    • http://xolilevifiw.rf.gd/prevention_of_oppression_and_mismanagement_notes.pdf
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_7ce4cafc1a204bb79102648120c58130.pdf?index=true
    • http://sewadereweben.epizy.com/how_to_become_a_better_reader.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_off000100a7.bin
5409795dc5296b5187a66770892bdb7100bd8a1cfeb5f02b1397d5c90e3663d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A7 6164 bytes
font_01_sfnt_off0001159a.bin
58f4d2c0cd02c2217baba37ec4136b051fbf97e31b559925058e69f60fe06084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1159A 11068 bytes

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