Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02e4120ec7513ea…

MALICIOUS

PDF

93.2 KB Created: 2021-04-15 10:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8470d9084f1bb8dc4b7f2f5fd5ee7e23 SHA-1: dbac0f80f0c980cc6c46b7db339769a66a621684 SHA-256: b02e4120ec7513ea2f1a40e7f577cc6260128402417d8392160ef911fe67eef5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=what+are+the+4+key+components+of+natural+selection PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450636/normal_5ff06b413270e.pdfIn PDF document text
    • http://kneeksi.ru/zujunozotsfk5j.pdfIn PDF document text
    • http://bighome.space/hp_switch_find_mac_address_portg7ksv.pdfIn PDF document text
    • http://shoppingyxplus.xyz/90241560102ak0p.pdfIn PDF document text
    • http://insurancecarusa.com/76991133326uhimu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_6030ed8a4cf83.pdfIn PDF document text
    • http://tadinos.22web.org/naruvitabenurazam.pdfIn PDF document text
    • http://homearfes.com/information_about_caterpillars_for_preschoolersidsgb.pdfIn PDF document text
    • http://kmplitka.shop/how_to_fix_a_kenmore_ice_makerreza7.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://fefosawixamuwow.22web.org/banking_service_chronicle_book.pdfIn PDF document text
    • http://power-guard.shop/carti_despre_apiculturaoczvv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414357/normal_5ff89c927b99c.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/fasudikek/annamayya_telugu_ringtones.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/cardiac_science_defibrillator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/dictation_exercises.pdfIn PDF document text
    • http://wuzegez.epizy.com/baby_shower_bingo_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/6526409031.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/desesaruguwigupu.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/hd_movie_kabir_singh_openload.pdfIn PDF document text
    • http://jemavavobeziv.epizy.com/coumadin_davis.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/aditi_arya_movie.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_off00012bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD1 5524 bytes
SHA-256: e5f8b7fce2523db417983c86f9111f00d838ef43e9590f268ba8136bcd8e9cf0
font_01_sfnt_off00013e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8B 11408 bytes
SHA-256: eafcd481a9da48afc106285219f48c24bbed5ea0a4203178009fbdc46830d110

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