Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5bb01bb65a0730…

MALICIOUS

PDF

81.9 KB Created: 2021-06-11 11:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ebaf8fafe4a852bd143d4c1a5c2edbe7 SHA-1: 062241e72747320b6f6b1207cb238aa92cd5b841 SHA-256: 0c5bb01bb65a07301e17ba7420a57571b93a74d3df7cabea2a9ad175e968aa4c
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://nomylo.ru/pbw?utm_term=dls+2020+hack+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425760/normal_60ba2c4b1425e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470222/normal_606e81101a870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458389/normal_600ca14226f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_6035b0c0db0fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447263/normal_60c1924d5245f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410207/normal_6056202df04d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471686/normal_6068b6babe513.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5ff08db32249e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453553/normal_6032a5b554e35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_601ac5cd06b52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404987/normal_6057be2ca894a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447447/normal_604ae9922d85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425728/normal_60bae1d06da6f.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/a3f18e86-13d8-474b-a576-078773fd7046/thomas_kinkade_price_guide_index_of_affordable_classics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5b8e33-03a3-4684-b7ac-23f9b9534d2f/is_the_magna_carta_still_relevant_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ebbd1a-ef26-4cca-aa83-5f063033e7e4/how_to_reset_jam_heavy_metal_speaker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/090b3bc7-c64d-4620-9b3e-78a2e18e09df/47278917301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2847eab-32f6-48a2-95d0-9c1e46b0aa9c/64045409624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b12b4fa-0b16-4088-a73b-0f26c9dd46ec/healthy_diet_plan_for_fit_body.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_off0000fff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF3 5128 bytes
SHA-256: 13e26f4fbb032edbc341243d8bd3db73ffb82a0f7a597d52ca0a15e15a8b2f9c
font_01_sfnt_off0001116b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116B 12008 bytes
SHA-256: 485949d1bae53327e22d0644eee744ed03dac3f6a0bac505e1e2b57c000e2754

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