Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e53144e22ff268e…

MALICIOUS

PDF

72.3 KB Created: 2021-02-10 22:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 47a5c00063f32ab4a72419899e78a11b SHA-1: 739f09ea08da13cc19bf39d78ec42e29aa216ed4 SHA-256: 9e53144e22ff268e9522249fde0b1737439ea4199967131817162bd5026673ad
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical finding for a PDF link farm and a high-confidence ML classification. The document contains numerous external URLs, suggesting an attempt to redirect users to malicious sites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://maypoin.ru/123?utm_term=linkin+park+castle+of+glass+mp3+indir PDF link annotation
    • https://lizekolu.weebly.com/uploads/1/3/1/3/131379949/rilolibosaviraper.pdfIn PDF document text
    • https://dolilugufup.weebly.com/uploads/1/3/0/7/130776220/zunerolefowisudeva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460255/normal_601151bed444c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493195/normal_5ff348ee29e78.pdfIn PDF document text
    • https://sajakuvidosub.weebly.com/uploads/1/3/4/4/134496924/xonelezigatu.pdfIn PDF document text
    • https://gisogademumes.weebly.com/uploads/1/3/1/3/131379615/9eb924f6aa6a86a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470832/normal_5ff3cbc581fd6.pdfIn PDF document text
    • https://vovasodakujex.weebly.com/uploads/1/3/0/8/130874601/ludixawavuzar-vimobusifif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463300/normal_5fd9b7fa1a2f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_5ff938a75ae2b.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/34dfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419002/normal_5ffc59c71ed27.pdfIn PDF document text
    • https://tikigafose.weebly.com/uploads/1/3/0/8/130874564/mafonex.pdfIn PDF document text
    • https://tukumexof.weebly.com/uploads/1/3/4/7/134721389/29f820.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454559/normal_6000d590ee118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458417/normal_5ff25f8ae8bdd.pdfIn PDF document text
    • https://sosepokapebovi.weebly.com/uploads/1/3/0/8/130814645/fozominixetinipuvid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393779/normal_5fca648c11268.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469349/normal_600541d7c39ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414514/normal_5fe640424253f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372681/normal_6007c07ce8151.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA0 5432 bytes
SHA-256: f3214bc22b5bea255e77ead5c0d2e7334599e0a4008ed9fc59de364e4fd18043
font_01_sfnt_off0000ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 12820 bytes
SHA-256: f9f1e1b09b0a1dee7b51d0593ca41396abe6d23ce59c1c6f538e14b810bfd9cf
font_02_sfnt_off000105c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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