Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e4ad583f39f244…

MALICIOUS

PDF

80.0 KB Created: 2021-03-31 14:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 16952ba9295a2c1390dfd95a0fccc522 SHA-1: d6f9988176e54545b90825cac2b8ec55837ba896 SHA-256: f1e4ad583f39f244ab97fc17ade719240c60761a1170c88d1b9d92124b376d53
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a malicious domain, likely intended to deliver a secondary payload or phish for information. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=the+agent+survival+guide+harrisburg+pa+17110 PDF link annotation
    • http://boxijogirexu.medianewsonline.com/jonefifafivopetikavonoz.pdfIn PDF document text
    • http://creditstar-kabinet.com/mozezutinipp8zp.pdfIn PDF document text
    • http://doucheop.xyz/gonoruwabuzobadilijililagks2n.pdfIn PDF document text
    • http://mignonette.space/wukamuguwetofotq2nz.pdfIn PDF document text
    • http://wide-mean.top/gerogobobuxijuruwunanogu9u3an.pdfIn PDF document text
    • http://hydrofthol.space/2484713927x2aub.pdfIn PDF document text
    • http://invitesistem.ru/tilugezawh.pdfIn PDF document text
    • http://lastmarkt.ru/favo_de_mel_goiania6c4pn.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/41739063452.pdfIn PDF document text
    • http://telemprom.xyz/siemens_thermostat_rdh10rf_troubleshooting2c2mj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/636c8ebb-a8e0-4b05-bef9-054905802247/25201869450.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/android_studio_button_onclick_example.pdfIn PDF document text
    • https://s3.amazonaws.com/dipafuxe/what_is_primary_key_simple_definition.pdfIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_a1c43d605af14257b6834fd76982e3b3.pdf?index=trueIn PDF document text
    • http://zotubune.myartsonline.com/daxefima.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/67971012410.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/greenland_ice_sheet_melt_nasa.pdfIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_463718c7600046a59f93311e7ebd1a81.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/72d62db3-5c02-4cda-bf73-b4fb329f8b40/wordly_wise_book_6_lesson_8_word_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/615c30f5-4ff2-41b7-92c8-18fdcb12946c/fokopenajudopem.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/boxobegodariwozosevuvik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8ca033-1a12-4fe8-a854-fb8c73c51c15/48534272387.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_off0000fc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC17 5644 bytes
SHA-256: bbee60b09e36b60734a80c90ba2eb706fa3e17a5db84618573e5deeaee4a28fa
font_01_sfnt_off00010f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F52 10584 bytes
SHA-256: d78f6101490e882de3e32bec209e3fe0825d0e893de8a9e9be1285a37430c5c1

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