Malicious PDF — malware analysis report

Static analysis result for SHA-256 048de0e393fcdf76…

MALICIOUS

PDF

76.4 KB Created: 2021-05-19 17:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5bfd408be1fc57d821c379ef1eef3fa3 SHA-1: 29d1f6652f95796808fc6194357d6ad3e0d90121 SHA-256: 048de0e393fcdf76275a04fc4ab8c363b7b145fac4fcfa7606dc72c4204298a5
156 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a suspicious domain 'baarspo.ru' that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious content, potentially as a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=what+is+a+sales+plan+example PDF link annotation
    • https://tamidotojo.weebly.com/uploads/1/3/1/8/131858916/vopad.pdfIn PDF document text
    • https://jedopebo.weebly.com/uploads/1/3/4/8/134889916/1ee9c6ac07c7e.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/1380150.pdfIn PDF document text
    • https://pelozaxuji.weebly.com/uploads/1/3/2/6/132680784/260828.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403819/normal_5ff3933e18597.pdfIn PDF document text
    • https://xovisifolato.weebly.com/uploads/1/3/0/8/130814526/xupudoveka.pdfIn PDF document text
    • https://rodedewosesuge.weebly.com/uploads/1/3/6/0/136010241/lekeruvurova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_6047bf80c444f.pdfIn PDF document text
    • https://pelepidavivi.weebly.com/uploads/1/3/1/4/131454492/7631919.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/nademopor/basic_interview_questions_on_java.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/newsletter_templates_free_for_teachers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/260e2609-64a7-41e3-909b-d5159155b869/cub_cadet_parts_and_more_discount_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36613317-a9ae-45ce-b48b-513a8ffab358/champion_generator_3500_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/tugafebip/para_que_sirve_el_potasio_y_magnesio_en_el_cuerpo_humano.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/funoborugilojujelabevup.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/following_directions_worksheets_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/fopowenukavibuxutimumire.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/sony_4k_blu_ray_player_x800_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/51566240285.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_off0000ee5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 5044 bytes
SHA-256: ef0eef7682e7de7be20c07ac633f91fb880f76f43257b40ee1f713f0d896c1b6
font_01_sfnt_off0000ff70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF70 10904 bytes
SHA-256: 9d407e2872ab40cf7b63aab66ce6d0d26adb2a1a36a8d7f035922d0f96ffdd1c

Open this report in the interactive analyzer, or submit your own file for analysis.