Malicious PDF — malware analysis report

Static analysis result for SHA-256 5236b1d0123ed940…

MALICIOUS

PDF

80.8 KB Created: 2021-05-13 08:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 41ea3e30cbea3bb755b267c8ac3898be SHA-1: 12bc315ad18653430b711af9f41ed1e07e58286a SHA-256: 5236b1d0123ed940d74230105f15d3676f253eb5d84d79c8384f3fa00b66bbcf
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://jottigo.ru/strik?utm_term=nordictrack+a2250+treadmill+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412895/normal_5feeb1dab860d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410703/normal_5ffd02af23d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_60480a86cf4bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_60212d14cebe0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388617/normal_6001d3bc4ee0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_604020338674b.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/roxajapujepipalevugez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473044/normal_6025848ebc331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_606523838887b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449775/normal_5fed19586ca68.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/mitad.pdfIn PDF document text
    • http://tuxesimufimiti.mypressonline.com/52359146678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454180/normal_5fdb7428e2ec2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/150f6af6-4e7c-439f-bc6f-4b54c179c1f6/fexavagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742c6370-c0e8-4227-a2b3-3d2f0fea2ccc/25110075189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae718914-a19d-4a10-b037-70fd167baba7/maravilloso_desastre_resea_del_libro.pdfIn PDF document text
    • http://mugazukadum.onlinewebshop.net/oklahoma_car_bill_of_sale.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_off0000fd44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD44 5492 bytes
SHA-256: 109fb1fcf97f6eac79e7c75a30bcd3cd25e7a4f8bd29da395cf3bb1293dc84bc
font_01_sfnt_off00010ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFC 10740 bytes
SHA-256: 330d0ce5ba728843f1767e6402d1d9e1446935d70cfb0ab9ca214aacfade37ba

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