Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8037a0e86787fa…

MALICIOUS

PDF

78.5 KB Created: 2021-02-28 03:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: c9e43e3b681dac4e7665199637971573 SHA-1: 372ae4b9f47b8671d7d4535b91598c0ffc700303 SHA-256: aa8037a0e86787faa362ed5226149646bc5290320b0fed7a2b12a9be7188b5e9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that directs the user to a suspicious domain, disguised as a search result for romantic poetry. This indicates a phishing or social engineering attempt to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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://soxebez.ru/123?utm_term=love+poems+for+him+from+the+heart+in+urdu PDF link annotation
    • http://pigigozoruda.mypressonline.com/nelasiwe.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/27588974969.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/husky_air_compressor_20_gallon_parts.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/vazimok.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/26906796324.pdfIn PDF document text
    • http://dhl-order.info/xegusonowixatusorumdslx.pdfIn PDF document text
    • http://formblckr1.xyz/7591333336m7g90.pdfIn PDF document text
    • http://tehnoprom.org/buvizafagufanutedegar7yl9j.pdfIn PDF document text
    • http://getporte.xyz/pafolij9e7z3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/amtrak_timetable_for_california_zephyr.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/brown_bear_brown_bear_coloring_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/manslaughter_sentencing_guidelines_2018.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/what_are_the_three_musical_textures.pdfIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/sherlock_holmes_1st_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/pibiruparuwalomemi.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/lakshmi_ganapathi_moola_mantra_in_telugu.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/zajov.pdfIn PDF document text
    • http://zijedan.atwebpages.com/zovozalizagameduda.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/administration_job_titles_list.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_off0000f573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF573 5248 bytes
SHA-256: b1dc53c2b2cedb31c13ac44e84ecb4d6c91ee5ecb311cc77e20bf2a391547016
font_01_sfnt_off0001072d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072D 10924 bytes
SHA-256: 1dc1fe4a3a7e357cc30c28216844cf064d748cbc55b5d37299d5f3ec8ac6f59b

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