Malicious PDF — malware analysis report

Static analysis result for SHA-256 db218e35456ff475…

MALICIOUS

PDF

70.7 KB Created: 2021-04-01 10:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: da24ca6d2aaa3ce0a060a400578bd0b6 SHA-1: d816c0d7d3a57aa03356b264b8701eae5e4d79fb SHA-256: db218e35456ff475b1030b6d7b4a55a0d0e21214a1d438f323f45becab34c960
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body, though heavily obfuscated, appears to contain keywords related to service kits, potentially as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/strik?utm_term=honda+gcv190+service+kit PDF link annotation
    • http://fanuvowebutil.22web.org/akinator_black_award_answers.pdfIn PDF document text
    • http://daxavepevepa.mypressonline.com/81650779282.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368221/normal_60077a1ccf21e.pdfIn PDF document text
    • https://jizotigop.weebly.com/uploads/1/3/0/8/130874082/89f0acff462.pdfIn PDF document text
    • https://xijapesulole.weebly.com/uploads/1/3/4/5/134588017/361c71c1.pdfIn PDF document text
    • https://gopopozemilin.weebly.com/uploads/1/3/0/8/130874381/6951390.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_6061af1b960e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_603b4ff31f012.pdfIn PDF document text
    • http://pasikufopubiwo.mypressonline.com/21334959317.pdfIn PDF document text
    • https://pofofeteb.weebly.com/uploads/1/3/2/6/132681268/01dfb3115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_60109410ced0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480387/normal_600aa62a53a5f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bototiluwoge.atwebpages.com/tutorial_calibre_convertir_a_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ba80a4c-5558-4ef0-99df-37d51d3e5cac/10683055655.pdfIn PDF document text
    • http://bujijawuta.atwebpages.com/the_hobbit_3_tamil_dubbed_movie_free_download_tamilrockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a225cf-a60b-41bf-a533-1c92b9bda04f/37803323976.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7e68366-53f2-443d-bdd0-725ac77da6fb/how_to_put_oil_in_a6_ac_compressor.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/gulagaretogu.pdfIn PDF document text
    • http://kiretadu.rf.gd/brighton_and_hove_school_holidays.pdfIn PDF document text
    • http://magufabag.rf.gd/sareridarupanovepo.pdfIn PDF document text
    • http://bekusisit.atwebpages.com/whirlpool_gas_range_parts_diagram.pdfIn PDF document text
    • http://zejagusip.rf.gd/68701188145.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/39403830120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef006ac8-d39e-413b-b315-6055a9bb38aa/how_would_you_describe_autumn.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_off0000d5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D8 5508 bytes
SHA-256: 6d2671063cb20199c24bcba7f21db84ee63b9a5d5434fd97ef8b740577204d84
font_01_sfnt_off0000e8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B4 10788 bytes
SHA-256: 97777c0fbe1515e4c0e98ff10842862a663e17d374fa5940b17cfb11730af0c8

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