Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5b137e2bcafe56…

MALICIOUS

PDF

72.5 KB Created: 2021-03-01 01:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a0ccc53c8b4a980b70033d42eb51d792 SHA-1: fa0588dd8551d337f700a9513633fecc0888d201 SHA-256: be5b137e2bcafe565dbd3df8fc8c5fc412499a5059d32cd5845138a24bb179aa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=human+body+systems+video+middle+school PDF link annotation
    • http://rujisuki.mygamesonline.org/star_wars_books_canon.pdfIn PDF document text
    • https://figalinob.weebly.com/uploads/1/3/1/8/131871825/f25b37864b3.pdfIn PDF document text
    • http://teagreen.space/729282851952xg9j.pdfIn PDF document text
    • https://tekuxarutupun.weebly.com/uploads/1/3/0/7/130775258/7ce6a3.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/mtd_46_inch_mower_deck_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/sLRW5hj/rulozodegiw.pdfIn PDF document text
    • https://gulapekojikag.weebly.com/uploads/1/3/2/7/132741551/sizamoxos.pdfIn PDF document text
    • https://dalideno.weebly.com/uploads/1/3/5/3/135384103/zokogumudivux_dopizi.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/wolina/can_loose_tea_go_bad.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/communist_manifesto_book.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/championship_form_table_sports_mole.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/composition_of_functions_practice_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/standard_deviation_excel_worksheet.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_off0000e1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AB 5348 bytes
SHA-256: 7c5dc2216525453105db9d2731f2a9e10ce7ae1390d1bcff81e6d9851a8ffcd4
font_01_sfnt_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 9776 bytes
SHA-256: 0842bb48b899f9290a0553a44a86ccd31897581a464172cebc61fa90743ad712