Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cbeeb778fbb96c…

MALICIOUS

PDF

72.6 KB Created: 2021-02-15 20:07:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5451932a09d1173f4b219649886958fa SHA-1: fc4ccf334c76d252e5abc42ff4e2ddbb88d6249b SHA-256: e5cbeeb778fbb96ce95d23f1b128a56b47ed8f66220cc757238925c6c1bc7b7a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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://yafferge.ru/123?utm_term=how+to+describe+rhythm+in+a+poem In PDF document text
    • https://cdn.sqhk.co/rubupidorinu/jYhjjdG/xodizejumumomilezerirebef.pdfIn PDF document text
    • https://gununoneku.weebly.com/uploads/1/3/4/3/134309052/jufazaragelanatoj.pdfIn PDF document text
    • https://kutebebi.weebly.com/uploads/1/3/4/5/134528954/e812bea06bfa.pdfIn PDF document text
    • https://cdn.sqhk.co/juvowisire/gfieJ7O/tiny_house_builders_dallas_texas.pdfIn PDF document text
    • http://neo-tp.ru/34065808350ydd4p.pdfIn PDF document text
    • http://getporte.xyz/341057971176tsm7.pdfIn PDF document text
    • http://inostrana.com/vuruzodibonawukulajabapurn440.pdfIn PDF document text
    • https://gokejubekilebu.weebly.com/uploads/1/3/4/3/134376129/kofumaz_boguxukazivuzum_zurelagolesajo.pdfIn PDF document text
    • https://bujetukojijem.weebly.com/uploads/1/3/4/8/134875379/c302becd437dc.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/3FGzQaQ/woody_88_block_puzzle_games_inc.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/Mghibde/gedubadipivetegil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_6008a3ca96030.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/wijd6ic/chikungunya_disease_is_transmitted_by.pdfIn PDF document text
    • http://useplafond.xyz/quotation_template_free_onlineq2i32.pdfIn PDF document text
    • https://cdn.sqhk.co/rofejusoturi/hfifBjc/tikuvemuxexapevuzezemali.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 5576 bytes
SHA-256: e8275e35839b7629fa178b0481b7a6ddde100c96a94f17bcfb1e60d9759aa08f
font_01_sfnt_off0000f0e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E6 10776 bytes
SHA-256: b568fc8206a674690da165cd3a18ab28dd77252e8c18963e2491845cc473c4e1