Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4b8ec29ca9a7770…

MALICIOUS

PDF

79.5 KB Created: 2021-06-09 18:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0ca2cb834a98294fd9f9d777557ee36f SHA-1: a2d16902240937515a31896befb969dc4274621d SHA-256: a4b8ec29ca9a7770572b15f43152e2c7d99e30c1a6d5b8e75845f98176f8f846
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 0.9997

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://synerhu.ru/pbw?utm_term=sleep+meditation+with+positive+affirmations PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476150/normal_603e4ac858f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470385/normal_601dc5fb66be5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497685/normal_60610cbc582fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456128/normal_602d0f99680d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_6042eb65eab81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474978/normal_60136ca95618c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477658/normal_60625d4544487.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://masawumel.pbworks.com/w/file/fetch/144420207/najemitokopakaxizogej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d37524c-0be1-4441-8f5a-9c064f964dea/talexawapuzoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de373c56-a2d3-4dd5-bb20-b66f6872bb92/gepom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3610c2f-e93c-4a0a-b4c2-3bbaa8698eb2/gezulawudagogumodowigul.pdfIn PDF document text
    • http://bekojifutok.pbworks.com/w/file/fetch/144786345/how_to_complete_a_schedule_c_1040_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/520064ea-b638-4136-83cd-a2cd97cba692/what_does_yo_amo_mi_novio_mean_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81c1c2f0-87d2-4937-877f-4495bc60257d/xafikudenovegosazuzotan.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/f/happymod_apk_for_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c6ab1dc-cd77-4640-a310-b69b3ffd91bc/msi_760gm-p23_fx_amd_socket_am3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7b46a12-ef53-45e0-82cb-b06d03b34bcf/79768166772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0041dfae-e955-4220-85a5-1870f9ac5729/pu_foam_sheet_manufacturers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0677c148-d157-484a-9299-1e9dda9c8f53/ffxi_solo_leveling_guide_1-75.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bce3677-7619-4b19-a0a3-0f91d2028d71/honeywell_th3210d1004_wiring.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/029f15ee-f56a-43b9-a5fe-57274c770902/82978624996.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_off0000f9a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A0 5536 bytes
SHA-256: 3a7c409a1a97ade5ce231adf9f4118c6455b0581437affa1eb162eb0ea00f3a4
font_01_sfnt_off00010c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5C 10652 bytes
SHA-256: 04401460d438f4889a4826fbe719216c30b74a854b121e5dfcca5130979f6b6e

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