Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36d0a2b9a2c4354…

MALICIOUS

PDF

98.6 KB Created: 2021-05-31 23:35:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 649ca5b5519bf80d36847d86e62d1ce1 SHA-1: 68b8b27c825fbfc5de7eefed16c32cc7d51229e8 SHA-256: f36d0a2b9a2c4354e0da05164c69390eadc3b2757a7d0bf36936535600db795c
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 PDF link farm. One of the primary URLs, 'https://irlanc.ru/pbw?utm_term=el+cuatrero+pelicula+completa+vicente+fernandez+el+arracadas', is flagged as suspicious and likely leads to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://irlanc.ru/pbw?utm_term=el+cuatrero+pelicula+completa+vicente+fernandez+el+arracadas PDF link annotation
    • https://matopudalerem.weebly.com/uploads/1/3/5/3/135318895/tenajiliwe.pdfIn PDF document text
    • https://moxisuneg.weebly.com/uploads/1/3/4/6/134657449/332073.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc647ab0-351e-4212-b371-e75c904fcf00/lijuwevasodobavatobatinor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c1f060-5431-4ae1-b6bd-df780b33a74b/55763533216.pdfIn PDF document text
    • http://xetibubib.pbworks.com/f/coloring_book_of_shadows_witch_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fc02fb4-b9b2-4587-a367-fb68569853b3/97910038010.pdfIn PDF document text
    • http://lugozamuxika.pbworks.com/w/file/fetch/144417282/how_to_find_moodle_answers_with_inspect_element.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0471bd2-afd7-4e19-a0e6-d72d5f023be3/4_pics_1_word_level_268_answer_7_letters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5c7401-fef4-4024-b310-7cd4188bdbca/whos_afraid_of_virginia_woolf_edward_albee_sparknotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b4f9f21-050b-4089-a134-dae4c27da45d/que_es_una_composicin_escrita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a64a56-ba2a-4d9e-ba70-4ea6aaa19dde/pagepigepulozaves.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d33f2a0-f470-4d7e-9f8f-d2e261bad6ca/vans_old_skool_high_top_pro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ba52081-7be8-43a4-b401-1de3cc73392e/levezijosudufedu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b51eff2-5351-4e32-b667-e185c43f64b8/britax_boulevard_clicktight_expiration_date.pdfIn PDF document text
    • http://visetululiv.pbworks.com/f/c_o_kancharapalem_full_movie_download_movie_rulz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b7309c1-3be8-4806-a05b-5484362d3315/how_to_fix_honeywell_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64e9e57-adfb-4f7b-aced-b9be564409aa/how_to_determine_intelligence_quotient.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a785fa9d-7827-4e3a-806d-3a6ef2fd5a76/juxajisamikumesixobir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85bc2969-b20d-4948-a902-98d7642a3a22/22120848935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39417b05-9f95-473a-8196-fc0107d4caec/mapokerotideda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6319087e-45e3-46bc-a2e4-621d0bd88d4a/15292994655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6b333f-eebc-41f8-b8fd-1143d09e8c2c/difote.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118FC 6440 bytes
SHA-256: 705377623a4c4344e02470fedf876d1ed6f0c7c0eac322cafb15afc9430d14bf
font_01_sfnt_off000128f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F0 5368 bytes
SHA-256: 268bec1fa2fb6aa82753bf85afe7c6f98268909f99509259929498b2c498a3e6
font_02_sfnt_off00013b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B32 12688 bytes
SHA-256: 81b7d849788154f6561ba94357d7335c49168b021148bcfed41810cc79d95703
font_03_sfnt_off00016490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16490 16944 bytes
SHA-256: 32b799ff9947d623cda05c08b786a4272d0ddcc827dc018b7349031717b5707f

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