Malicious PDF — malware analysis report

Static analysis result for SHA-256 8534ad8079a23244…

MALICIOUS

PDF

73.0 KB Created: 2020-12-30 16:08:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 03741b8713f07fef8da2c5a198308b51 SHA-1: ecf87025902e678c13564d599d4182699ec41b0f SHA-256: 8534ad8079a232440172479edc6961628b2140c2a35e4888e4c6bd0c55006901
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, traffking.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://traffking.ru/strik?utm_term=strategy%252B+business+magazine+application PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f8927b06a622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387419/normal_5fd8804975922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381971/normal_5f94f67621537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485828/normal_5fd64b29ca2ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404966/normal_5fb297e6c7bb2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4eefbfda-625a-45e4-a777-1fcac1d4d19b/immigration_nation_documentary_director.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7404e22e-b088-4bec-a77c-7bb1a1bafef2/vavitutinedefavow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ed0c38f-5c4b-4bc8-8b6c-80d288af0206/85129328683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74568b78-5cbd-468c-86a9-44115ddb1852/nolejumotijupa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a259e774-d5f2-4d7b-b09a-0cac1290ad67/80002233914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c66dc23-7110-45bd-addf-5f83e6d3744c/suzuki_ltr_450_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/beauty_and_the_beast_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/milebamedununukudoxovives.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B6 5532 bytes
SHA-256: 609043dd860bc5b9879d6f99de256624b8c930bed65f769268750148d40516e7
font_01_sfnt_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 10156 bytes
SHA-256: 773aeb8074fff9559a31949541cde2b63f7590a2926b14e8989b3fcb2d90569e
font_02_sfnt_off0001091c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1091C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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