Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd6e2c0c243a2cf…

MALICIOUS

PDF

72.2 KB Created: 2021-03-15 20:19:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3ee9035c38aee9d1f51a9ddc98bb7b2d SHA-1: 23d231115a7c71a39222159c936db0656efe9ce1 SHA-256: 8fd6e2c0c243a2cf1026d299a22d2c19b25776c4c1c09759b8b16c334e2aed59
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The 'SE_CLICKFIX' heuristic suggests social engineering by instructing the user to execute a command, likely to bypass macro restrictions. The embedded URL points to a domain associated with phishing lures, further supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://xajibur.ru/award?keyword=convert+scanned+pdf+to+word+freeware PDF link annotation
    • http://wirajamosilun.22web.org/lanokoputofezatunasil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489852/normal_5fc59719eb007.pdfIn PDF document text
    • http://jadivaza.iblogger.org/zebuluxofenelerugukovan.pdfIn PDF document text
    • http://ledifosoxeli.22web.org/how_to_say_yes_sir_in_french.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417119/normal_604adc30c9426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_601daa05e4c44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_60090aabb7489.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426966/normal_5fffd77337dd2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxudafemif.epizy.com/28834976022.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/chaganti_koteswara_rao_bhagavatam.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/autocad_civil_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/audi_q7_3._0_tdi_performance_upgrades.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/48319504082.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/zinefiworokax.pdfIn PDF document text
    • http://movedubeliw.epizy.com/54281706792.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/rezuxemulanepozik.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/the_haunting_of_hill_house_eleanor_mother.pdfIn PDF document text
    • http://gofusunoko.rf.gd/53206501286.pdfIn PDF document text
    • http://vigukesege.epizy.com/85749847889.pdfIn PDF document text
    • http://pamapubosozule.epizy.com/wosil.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/putuki.pdfIn PDF document text
    • http://fusuxitizubuka.epizy.com/latest_movies_in_hd_hollywood.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/king_size_bed_sheets_wholesale.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/nfl_cheerleader_uniform_fails.pdfIn PDF document text
    • http://gowasofejav.rf.gd/a_series_of_unfortunate_events_book_11.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/all_india_mushaira_mp4_video.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_off0000dd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5176 bytes
SHA-256: 66e9af17c7f15977744493a0e2348849834050fb481fddae591ae5d143e5caad
font_01_sfnt_off0000eefa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFA 10472 bytes
SHA-256: fb5895745090a9d96dd1c83c015e8d33513917545c256ffd8f396b9cc5fb8261

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