Malicious PDF — malware analysis report

Static analysis result for SHA-256 82f4c758115f838f…

MALICIOUS

PDF

78.4 KB Created: 2021-02-22 22:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 08ef708f208bac28e3ade9177936c912 SHA-1: 8e51e5368b8af3eb86cc02504d95e227937465ac SHA-256: 82f4c758115f838fb62632483a22804cdfa3acff191bfa3eb8821bc76e6708d1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://baarspo.ru/strik?utm_term=where+is+the+expiration+date+on+my+graco+car+seat PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446401/normal_5fdf0cb750f71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_600ef076c2d98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505096/normal_5fe45c37d0338.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/hCjbgiZ/superhero_champions_blocky_universe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_601c69d52d3d2.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/icDgj1n/sakoxozuvusuxokunivanij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_602b54cd8a4ae.pdfIn PDF document text
    • https://cdn.sqhk.co/runusamopit/hegf1ZC/mini_racing_adventures_how_to_enter_cheat_codes.pdfIn PDF document text
    • http://dodunagosukew.iblogger.org/fufowomuwibogibodororo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mutexuwe.epizy.com/judebodipug.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/71529955399.pdfIn PDF document text
    • http://wumevagijez.epizy.com/safofemojozimoteri.pdfIn PDF document text
    • http://febiked.rf.gd/48217867075.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/vezebu.pdfIn PDF document text
    • http://nuxebezojav.epizy.com/blog_template_html_php.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/septoplastia_e_turbinectomia.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/8386496676.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/bipigavomanateruzawiz.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_off0000f512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF512 5636 bytes
SHA-256: 1d22e2e85455d1ccdb510d6d706fa450f4b1cbc1c75fad205683922f0860f7ae
font_01_sfnt_off0001082a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082A 10564 bytes
SHA-256: b2cd79d2ec7104c65586e5b0e392feccfe2a6fa7678c5e70b8e8c97060e762fb

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