Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f45ff2e3f74a3a…

MALICIOUS

PDF

77.2 KB Created: 2021-02-13 20:34:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 033ff9734b19fb332d61dad2c7165c0d SHA-1: b1dd15f2b3e60dc08673fcc70f5c9aca5a7fe2ad SHA-256: 88f45ff2e3f74a3af485adc29a8892dd440872f2c1d3943e3f483099bae84b2e
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is malicious and a phishing attempt. It embeds external URIs, specifically directing users to 'https://leonvi.ru/aws?utm_term=reading+comprehension+worksheets+for+4th+grade+pdf', which is likely a lure. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/aws?utm_term=reading+comprehension+worksheets+for+4th+grade+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413976/normal_5fcb64af5bd37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495269/normal_60121891d2fb0.pdfIn PDF document text
    • http://universityru.fun/vijudozetamipagugewvm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412908/normal_5fcacf38d1d20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448540/normal_60097bce2e945.pdfIn PDF document text
    • http://berabujadew.22web.org/evil_dead_all_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472185/normal_5fe473b5eaff0.pdfIn PDF document text
    • http://copyright-services-us.com/backpack_literature_5th_edition_downloadmpod5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496816/normal_5feb0535257bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5ff0de408ab2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409797/normal_601ad8dad009e.pdfIn PDF document text
    • http://raifaisentgo.online/temple_escape_heroiczyifg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469828/normal_5fd0e5b41b800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469375/normal_5fc8b5aae2254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389394/normal_60238010e0f44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481993/normal_5fdf1e6fa26f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450415/normal_60181baa4fe1f.pdfIn PDF document text
    • http://instapriz.site/how_to_read_the_akashic_records_by_linda_howe7169g.pdfIn PDF document text
    • http://titanof-filtr.ru/451362328379iily.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zibuxaladovokex.epizy.com/understanding_by_design_grant_wiggins.pdfIn PDF document text
    • http://nidikofuwovi.rf.gd/abordagem_sistemica_na_educao_fisica.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C7 5576 bytes
SHA-256: ec9317fcc11c87afecd4d463061e917622c566e8891197efd30f599d0a0d9455
font_01_sfnt_off0000f3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A3 11128 bytes
SHA-256: 17ee1fb9eefe78e3d9d34911cafe7692d11ad0360dc520e781e292108e8de4cb
font_02_sfnt_off0001188b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.