Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7562c5087a8ae5…

MALICIOUS

PDF

69.4 KB Created: 2020-11-21 00:39:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6970bced5907796f71b5ea4a797f88ee SHA-1: d84e71422bc4b6f0ed699a6bfd9bb9c66b34d33e SHA-256: 9c7562c5087a8ae5458363da1d62541c03976b8fbef3023b0d0878d75d4964ba
164 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 a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=crucon+cruise+outlet+main+stage PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5f8c1f8594930.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5fb4cd79d6921.pdfIn PDF document text
    • https://jopepikenaz.weebly.com/uploads/1/3/4/6/134652119/pulabasakarojeka.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/03b7c86e-9918-4ff9-a656-c865983e75dd/wuwopazonujememuroxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4aba098-e55f-42e1-99d6-ebbff3880444/sodijidesav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c370ff56-3c70-4c84-abd3-c6e2cd3071f2/la_columna_b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7552ffe7-ba54-4812-8d83-8bd23f4aafca/befamukarezokitaxufexolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b84f2055-e934-4440-ac21-56446af50441/roman_society_social_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/068fba3b-6504-493d-ba11-d6cb09fdc7a9/biporebekajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5473804b-4294-4410-8878-3334719873e6/talking_murloc_plush.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 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD061 5024 bytes
SHA-256: 08ea0af7b5e445b2745e801b1ef214b1ded81897b3c5932408d0b131c612edb0
font_01_sfnt_off0000e15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15B 11280 bytes
SHA-256: aabafcaf4fe837f4bad49b867f680e9c6c799df06d2b258b38df83815e697c2f

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