Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc60230f55ed699a…

MALICIOUS

PDF

76.6 KB Created: 2021-03-21 22:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 634bceebb974e05282ab36a78931dc24 SHA-1: caec865a8a8bf6a7ba8a1e37a5fe8147c33e8cbf SHA-256: fc60230f55ed699afafa765ce78678edf686947119ca81d6ccd8486cd83c1a88
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with many pointing to disposable domains and identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://nipisod.ru/123?utm_term=circuit+breaker+3+phase+transformer PDF link annotation
    • http://zixaxagewan.mypressonline.com/augusto_roa_bastos_hijo_de_hombre.pdfIn PDF document text
    • http://novazeku.mygamesonline.org/acidos_organicos_e_inorganicos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488574/normal_5ffa3644a2b1e.pdfIn PDF document text
    • https://kukatuvitakutir.weebly.com/uploads/1/3/4/6/134690336/5822d506403.pdfIn PDF document text
    • http://misujupino.getenjoyment.net/different_types_of_computer_network.pdfIn PDF document text
    • http://vatamuvemazaril.sportsontheweb.net/perimeter_and_area_of_polygons_worksheet.pdfIn PDF document text
    • https://vemetufubejukat.weebly.com/uploads/1/3/4/3/134367776/9669704.pdfIn PDF document text
    • http://zereteleriw.getenjoyment.net/subupofipabesigome.pdfIn PDF document text
    • http://wujasonuvilo.mywebcommunity.org/alter_ego_3_b1.pdfIn PDF document text
    • https://kiluzamomumu.weebly.com/uploads/1/3/5/3/135344913/bizasider_rakeniloluranup_lopemoleboje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_60465c426ee43.pdfIn PDF document text
    • https://nerapusu.weebly.com/uploads/1/3/1/4/131438180/nexanosov.pdfIn PDF document text
    • http://vitodibiwanezej.mypressonline.com/is_divergent_ascendant_on_netflix_usa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426541/normal_5fdf9a74f2ad7.pdfIn PDF document text
    • https://dunogijejuj.weebly.com/uploads/1/3/0/8/130813547/72333ab3a4592c.pdfIn PDF document text
    • http://ronerikasov.22web.org/dafepat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475570/normal_603a6fd59e4ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruzizasasasami.rf.gd/detector_for_sarahah_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/search_engine_marketing_guide.pdfIn PDF document text
    • http://pikaderobiw.atwebpages.com/seretijekamorituwo.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/chemical_weathering_soil_formation.pdfIn PDF document text
    • http://wegoxoxajenugol.rf.gd/68079929113.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/new_electronics_projects_circuit_diagram.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/1607173680.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/5x10_aluminum_sheet_canada.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_off0000ec2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2C 5496 bytes
SHA-256: 6bfa28e06a48c35e8b512cbe1be222d77ca44df47936e2c4d728cf9d19f1c21a
font_01_sfnt_off0000feb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB7 10680 bytes
SHA-256: e5e49d17305c0c4e5e8d4e86ebf9bd517bdff7aff045c8769e50f27b28aecccd

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