Malicious PDF — malware analysis report

Static analysis result for SHA-256 08338d575fd68a00…

MALICIOUS

PDF

81.4 KB Created: 2021-01-09 04:43:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0cc3238c862932e5f837785167bac749 SHA-1: b743973463f8d1ccfa1830db0d40cc9f1585e8a5 SHA-256: 08338d575fd68a00c4e89d37c9a6f77d60f2262ead8d6a876233878d4df585e0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL suggests a phishing or malware distribution attempt, masquerading as a service manual. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of a phishing lure.

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=yamaha+moto+4+80+service+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482188/normal_5fb6e61ad070b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417525/normal_5fc86794c902e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393632/normal_5fa65c53bc8ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488810/normal_5fa9b0a910f88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386607/normal_5fc2d3ebf1630.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/1heLrhj/ruremaximalavajej.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/496fdda8-9ca8-4a49-b30e-ff05cd2bb0c7/xodutizunopipe.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiwovowus/unit_6_vocabulary_answers_level_b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c305cfe-86e9-4713-ab62-17fabbeadd1b/95413072627.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/delamefixasamix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66bfcf97-2a05-448c-bc21-67c1a126dd0a/4315791782.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/zopikozituzosaz.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/in_custody_report_napa.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/bissell_proheat_2x_manual_9200.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/formatting_bulleted_lists_in_indesign.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_off000101e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E8 5840 bytes
SHA-256: a323024539771e19827cdc5934ac468476230aa5229cb5032993899ca2a012ae
font_01_sfnt_off000115ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AE 10140 bytes
SHA-256: b09d28489e438857027963637f151a19d0e5394fe00defabc28e52952bc07c4a

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