Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9fae8014660da91…

MALICIOUS

PDF

77.3 KB Created: 2021-02-26 11:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 20684be203bfc1f4696083e4e5285d36 SHA-1: 58c6639e9551e57bf9808c7f4754640cae879ced SHA-256: c9fae8014660da918e70666bb6166712f8ac25f1c2a589d751ed8356133b70d5
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that points to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users through a deceptive link.

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://golowaki.ru/123?utm_term=what+is+symbol+for+gold+on+stock+market PDF link annotation
    • http://rebelojujiraw.iblogger.org/88230533151.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/1_to_1000_number_chart.pdfIn PDF document text
    • http://betflixguvenilirmi.com/senumi68xqq.pdfIn PDF document text
    • http://pitushok.fun/can_could_be_able_to_manage_succeed_exercisesli2r8.pdfIn PDF document text
    • http://leftoutclub.com/westie_haircut_guidevrw1t.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/92788906165.pdfIn PDF document text
    • http://fly-drive.online/bengali_movie_chokher_bali_full_videopxie9.pdfIn PDF document text
    • http://vizionsmc.net/venojefafakurebemoegdb3.pdfIn PDF document text
    • http://tesar-krd.ru/mevijugibilexixapd7d7.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/sojaxub/urine_c_e_test_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/pediatric_pneumonia_guidelines_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/87440364316.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/pewoduwifunifobofubisep.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/vulaxowunomibagi.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/gemasad.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/what_does_similarities_measure_on_the_wisc-v.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_off0000ef09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF09 5752 bytes
SHA-256: 03c7242b09748d1a8a0a92b06181341520e74774bd6cc7bb362313371f59b7d2
font_01_sfnt_off00010283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10283 11196 bytes
SHA-256: 937ee5192ad5ddc332c7a7ddf2a1ac9efadfa7f0067e7f2c55590691bc13a1dc

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