Malicious PDF — malware analysis report

Static analysis result for SHA-256 092a5cd88ad230a9…

MALICIOUS

PDF

71.9 KB Created: 2021-03-05 14:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 45c5a1f5e214e83a2cd7acd972c64185 SHA-1: 8d7b521ed7ca5d07460a74f5e38c83b0b1a007ba SHA-256: 092a5cd88ad230a9709224f10e71603a1cfe9b67711bbe0c0492092ba9d20a91
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://crophysi.ru/award?keyword=think+of+me+fondly+lyrics+phantom In PDF document text
    • http://nozudozaki.22web.org/gajijowodutasibipifeboke.pdfIn PDF document text
    • https://dezitatukuti.weebly.com/uploads/1/3/5/3/135389988/70346766740c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383445/normal_5fd73477a9484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_60400175d8d33.pdfIn PDF document text
    • http://aydym.club/grant_cardone_sell_or_be_soldwto11.pdfIn PDF document text
    • http://santand-es.com/sonic_nutrition_facts_chicken_stripssowf9.pdfIn PDF document text
    • https://komuwewolidixat.weebly.com/uploads/1/3/4/8/134871085/2900813.pdfIn PDF document text
    • http://takefeduw.iblogger.org/16137767589.pdfIn PDF document text
    • http://pidukefap.22web.org/telomine.pdfIn PDF document text
    • http://thechambre.xyz/is_the_bounty_hunter_quick_draw_pro_waterproof6w1kz.pdfIn PDF document text
    • https://dojinutek.weebly.com/uploads/1/3/4/1/134108596/5a9e04f920e67a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://samesesodore.onlinewebshop.net/what_is_microsoft_core_cal_bridge.pdfIn PDF document text
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_c8acba812a4543ebb309f706e47a5d8e.pdf?index=trueIn PDF document text
    • http://sabiwilurase.atwebpages.com/fekanisuwuvixuzubokej.pdfIn PDF document text
    • https://01d67eed-50ba-4ccb-8f82-c1581f7ed07e.filesusr.com/ugd/e3325f_40e0bb009e82408b825b2ae989762c5b.pdf?index=trueIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_84b455d34bfb40ad901d4c7cabaffd63.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_e95d05243d2640c59c7bb2f9a883759b.pdf?index=trueIn PDF document text
    • http://manutejewugowol.rf.gd/dupefelidi.pdfIn PDF document text
    • https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_8f9e64b2fef3499ab9c7e17902c20928.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD082 5512 bytes
SHA-256: 86d9de35e13fd55cfbbf8b172a729779a4b5505ce1fc315740a0efd2c67fcd28
font_01_sfnt_off0000e31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31A 2128 bytes
SHA-256: 994e7822b1fb56bffb26d437483d35b95203e491f59001fb2ca858f515f03ea0
font_02_sfnt_off0000ecea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEA 10196 bytes
SHA-256: f5262b5ec599e2827081ced4d4e762d0e3b2a3d401e3f8188750d5f6e7f052bd