Malicious PDF — malware analysis report

Static analysis result for SHA-256 0045fcb09540dad2…

MALICIOUS

PDF

221.3 KB Created: 2021-03-19 05:10:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 35432e6231f7d664e597ffdf2dca1077 SHA-1: 9e23b02d7f2f3dfb5d1a66b0408eae36bdcacd10 SHA-256: 0045fcb09540dad2fff033bace998b348afc00c5cad47f2805462134262b283d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the embedded URL is the primary indicator of compromise, likely leading to a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/award?keyword=histologia+de+higado+y+pancreas+pdf In PDF document text
    • http://pifedalune.medianewsonline.com/3066692905.pdfIn PDF document text
    • http://biomanix.best/transgender_top_surgery_female_to_male9nhbw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464702/normal_5ffd3e42b63e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5feebe98c0372.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/hjVAkhb/54931555676.pdfIn PDF document text
    • https://cdn.sqhk.co/tumexifukevu/jvhfiec/carnival_games_ps4_vr_review.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/ghsji7U/93681991978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd242d49788d.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/31134394432.pdfIn PDF document text
    • http://chambrely.xyz/grade_7_fsa_mathematics_practice_test_questions_answersdem0v.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/petikamov/xinoralibonuxogitarexivuj.pdfIn PDF document text
    • http://fusozevukatamir.atwebpages.com/78913428473.pdfIn PDF document text
    • http://titugol.atwebpages.com/39502509991.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/lavozetojawijisalegiwopo.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/lajajanadekijukojila.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/10327216451.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/staples_business_card_template_12527.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/45246265573.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/lodagoserinofiviwoton.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/chiari_1_malformation_mri_criteria.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/trastornos_alimenticios_libros.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_off00032bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32BEA 5480 bytes
SHA-256: 52e5ce39b245ea3cd501cdd0771b8717272c0ddf04dfb5b3d6c291e11f912d63
font_01_sfnt_off00033e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E92 12112 bytes
SHA-256: 9013f5e4fdd4fb9e92500c138ee5fdf58db6d3164adbc71bca330aad593788b4

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