Malicious PDF — malware analysis report

Static analysis result for SHA-256 6329dd4edf5eb9f6…

MALICIOUS

PDF

121.9 KB Created: 2020-11-14 20:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6258f9c3e918e6a7545b4990190b7b12 SHA-1: 31f65a28d63771f08f38af15cc292a00c01a1d25 SHA-256: 6329dd4edf5eb9f6548e50ea543760f9070cab4e0f3df08d4d9240083bf81199
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to reference product details, suggesting a lure to entice clicks on the malicious link.

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://traffnew.ru/123?utm_term=herman+miller+mirra+2+used PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373239/normal_5f99cff96d1b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_5f9b230bb4f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489979/normal_5fab4f119f709.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5fac1f8225315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f874656eb390.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/76de4728-66f9-4d7a-b4c0-ad2f24004a5b/mp3_multimedia_player_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/javexutube.pdfIn PDF document text
    • https://s3.amazonaws.com/konimowu/zuwonoronitotagaxodunun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85939821-115a-467b-afb4-ef612d77c154/lozapiboxurodabuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0429eed-06ed-429b-bdd4-6371373339a3/31098452097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f971f35-0397-4d6b-b1cb-3748fc3c60dc/sevamivonalidum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd41d41c-3a50-43f3-96fe-e4e78d29e7cb/sajurajisite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b332e6a2-9b00-4173-8686-e5a11ed8dfee/fukomokafavonudamizepiwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6498b6e-e958-43f8-a33e-9665e96fae6d/demip.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_off0001a21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A21F 5064 bytes
SHA-256: 02983bba1278ddc6313d5691155aa2b11908148989848aaefc68466b3f0cc7f2
font_01_sfnt_off0001b335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B335 11176 bytes
SHA-256: 4a4d95fede592b46b0c4fc8554c5d297026a9714668da9e4a3d570e99b83a190

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