Malicious PDF — malware analysis report

Static analysis result for SHA-256 733569f700ce4285…

MALICIOUS

PDF

76.7 KB Created: 2021-04-15 16:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d07a050c303b26d29dd4bed0b556888e SHA-1: 51eb8de081dbac3ecfaa71ddc2bdacfb3a11dce3 SHA-256: 733569f700ce42853a3c2d26f40719af740c86834e1a835e9502f3dc43286b07
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to 'https://nipisod.ru/strik?utm_term=how+to+get+my+comcast+remote+to+control+my+sound+bar', which is likely a phishing lure. The document body, though heavily obfuscated, appears to be related to the URI's content, suggesting an attempt to trick the user into clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/strik?utm_term=how+to+get+my+comcast+remote+to+control+my+sound+bar PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422884/normal_605c222e46ea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_605c4dabb2284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_60250bca2231c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_605acc40cafd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485587/normal_603715cc292e6.pdfIn PDF document text
    • http://savadaqwe.space/pazovutodebo5g.pdfIn PDF document text
    • http://ig-socialmedia.xyz/forms_of_asexual_reproduction_in_plants48616.pdfIn PDF document text
    • http://otomail.business/watchos_6_beta_8929an.pdfIn PDF document text
    • http://mandarin-fruit.space/869704364415919h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420250/normal_603113fdb5962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_6049b64495381.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_604fc3d41287a.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/c61867ae-eccc-4c72-b2bd-9fd6ef60d8dc/63490421063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80c7578-a344-4e55-9c97-1dd04565ab51/air_force_1_custom_paint.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/pazowosugaxiboz.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/vatexirexenizef.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/bhagwan_ka_photo_hd_mein.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/what_are_the_tools_used_in_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/cdi_college_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/lujimesig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f875d6ff-ce50-4719-be8c-10c51ba1dc47/2015_lexus_gs_450h_f_sport_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/ferarovirawewatobitoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/bupuvuvo.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/albion_builds_guide.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_off0000ed47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED47 5552 bytes
SHA-256: c1ad59024a6a3c84cbc71b57c0e2007862daae02bafa22ecc440016fe4d37ba3
font_01_sfnt_off00010025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10025 10800 bytes
SHA-256: e8f4876bc73bca52d4bcde2e8842737bd9572c391b2f157fc163e7efbacc7312

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