Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5c70ff4ae7af66…

MALICIOUS

PDF

78.7 KB Created: 2021-06-05 22:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: da5c93ac08efde445e2c764380fcdc44 SHA-1: af2f6566719741f271d902e68428ce307608c61e SHA-256: de5c70ff4ae7af6619e093e245283555491c4b99f0b4867315da769c84bf3e7b
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://pixomot.ru/pbw?utm_term=how+to+create+an+operating+budget+in+excel PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392451/normal_5fc9cef8c7b27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475741/normal_60652be2aa361.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465556/normal_6063a6a6c5575.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387235/normal_5fc9f940a708f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_60367fb12ed80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_6011fa9d41877.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4481988/normal_60b139624922f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475874/normal_6069d2a484e3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378608/normal_601b60c13482a.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/90920648-6ee3-4447-973f-c46e0b282988/wupukodexo.pdfIn PDF document text
    • http://tazijebep.pbworks.com/f/pezelegarad.pdfIn PDF document text
    • http://jolunatimavu.pbworks.com/w/file/fetch/144528498/35449798269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34633bef-4736-4de2-b6cd-b1fb95d70457/what_are_the_4_types_of_poetry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/420bd3dc-100f-4d5e-bd5f-34d576871649/download_fifa_20_apk_and_obb_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c12fbb49-6c54-47c7-842e-f3d6e8d37c34/papotoputomuje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70732c26-3cc5-43ca-8b69-a1d6a69c2715/cosmic_serpent_dmt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e6844c5-27f3-46b1-87b4-88882b68990b/bees_saal_baad_1962_movie_free_download_hd.pdfIn PDF document text
    • http://tusawijer.pbworks.com/w/file/fetch/144454311/wild_animals_colouring_book.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_off0000f85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85B 5324 bytes
SHA-256: eeee5d322f3c2cfa4b545176c7535090f8fb7e0905f06684f2346c877ab3e6b8
font_01_sfnt_off00010a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A92 10212 bytes
SHA-256: 41b13df16922e42b4b26901070e687af2ce795bfba22986fc8d15849a7c406d6

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