Malicious PDF — malware analysis report

Static analysis result for SHA-256 16c5b0a0adeb7247…

MALICIOUS

PDF

109.8 KB Created: 2021-02-11 08:49:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 37d3fe36f7aab0c911a2a9e9c4fa22b3 SHA-1: 976d741db6f10bd239f850576e37e8364ee855d7 SHA-256: 16c5b0a0adeb7247897eb6b965d6343f68575581348129206fc2d2042555829f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a search result. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/wb?keyword=bakrid%202019%20song PDF link annotation
    • https://cdn.sqhk.co/sotatixorawi/Riaigp6/12801908707.pdfIn PDF document text
    • https://cdn.sqhk.co/zanuduwedimu/ilWgdhc/arrow_gold_rtk_gnss_price.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/ApwheBt/33208412897.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/gjehaha/goal._com_chelsea_news_now_today.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tixinova.rf.gd/30983205850.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/80566808037.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/xipiv.pdfIn PDF document text
    • http://tisigivikevutik.rf.gd/lojusufeli.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/51724415113.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/laws_of_indices_a_level_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/certificate_of_origin_vietnam_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/acrobat_reader_linux.pdfIn PDF document text
    • http://fulovefodib.epizy.com/answer_of_how_have_u_been.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/celtic_woman_ancient_land_dvd.pdfIn PDF document text
    • http://xutulatovemi.epizy.com/ace_inhibitor_angioedema_patient_information.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/fonofobiregelazasegini.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/audit_report_template_iia.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/15901153856.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/wofazopitejudejadil.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00012116.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12116 9536 bytes
SHA-256: d1281c921750237ab694b45d1cc8e528bc76d9c8748d3fcf25deba09e61b62e3
stream_006_off00016972.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16972 21996 bytes
SHA-256: 3cee0c66b045f84b6f11c0b91b19284d63356bf6f9b515bd8fc435d6d7ef87f2
font_00_sfnt_off00010e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1A 5556 bytes
SHA-256: adcca52b4ee1bb69987dfb50afc47bab3021e23e2c102edd05f9e2690b2e114e
font_02_sfnt_off00013b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0D 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_03_sfnt_off0001466f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1466F 10144 bytes
SHA-256: 44dba5c19d4ed98e729c3c57aa1fe5fab4779c47ed6ab4e45a8ee8368989bf8d

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