Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f3b765be1edc85…

MALICIOUS

PDF

69.4 KB Created: 2020-11-14 00:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9547020014f9869bf570bc664ca249f7 SHA-1: d6d4f4734fc83a64d6a270ed0706564818526659 SHA-256: c8f3b765be1edc85bfcecceb2580309b0ebc4c8fd467fa78d657ff75460036a1
96 Risk Score

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 0.9995

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://traffine.ru/123?utm_term=sarah+jessica+parker+perfume+covet PDF link annotation
    • https://bopiwode.weebly.com/uploads/1/3/4/3/134367631/dawagomibisike-gowezekadono-kosumedes-lidavukagike.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5f9e622ee7ebf.pdfIn PDF document text
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/bukuzopuzir-mikuxerojaweta-dapudokurogova-kowalime.pdfIn PDF document text
    • https://nawajago.weebly.com/uploads/1/3/4/6/134621860/8733622.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lewuli/sigmund_freud_books_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f2a46d-91e9-41a8-85cf-bf100ab1108d/79340387826.pdfIn PDF document text
    • https://s3.amazonaws.com/juzalizuvar/cartoon_blood_drops_images.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/telluride_neuromorphic_workshop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854a50dd-1bd4-4c59-bdfb-73901d7459d3/rocket_spanish_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d03724e-5ba5-4373-8629-60ca8455e73c/4444251268.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20E 5300 bytes
SHA-256: c16faefd430476c1731c9609635a8a6d6ad00ba67ea087a749c8dc52bd7f2842
font_01_sfnt_off0000d422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD422 11524 bytes
SHA-256: d4fa904834d3c5c4303728b7803c313a7e8cc24e3a78bedf3fe9f2db427f1e3c
font_02_sfnt_off0000fb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB37 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3