Malicious PDF — malware analysis report

Static analysis result for SHA-256 64734e425ca169be…

MALICIOUS

PDF

70.6 KB Created: 2020-11-18 16:34:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: e12691279a04217177ac38f122d502fc SHA-1: b10f26be52a0490cd90b136b3928106966be9ec6 SHA-256: 64734e425ca169be2c342edc7ccbb54bf5f3d62b06da63780f4075165de14332
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary external URIs points to 'traffset.ru', suggesting a redirection or phishing attempt. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' further supports its malicious nature. No scripts were extracted, but the overall structure indicates a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/strik?utm_term=que+es+la+salud+celular PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388620/normal_5f9f08084c8ab.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/e8e079fea04f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_5f8a473d160cb.pdfIn PDF document text
    • https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/pozojavukuxaleg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/tufaxatupisajabodu.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/66297376052.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/34425047056.pdfIn PDF document text
    • https://s3.amazonaws.com/tifemuma/kenmore_elite_gas_stove_top_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/dell_latitude_e5400_spec_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/lifetime_cloud_mining_contract_bitcoin.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/12393891261.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/73742494229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccead506-8038-46f9-8c99-3ae991b265a8/vafuf.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/69379790355.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/la_autoestima.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_off0000d66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66E 4996 bytes
SHA-256: 1c8888686aab1dd3d8344ec6449a71cf9c82e0db4780d48956b773cbf2a0b27e
font_01_sfnt_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 11112 bytes
SHA-256: c29ade21ccf7d2403fff3d337e1ef776c46194a6b94de1765702ccd09325f414

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