Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f74d21163e2913d…

MALICIOUS

PDF

71.9 KB Created: 2021-03-10 14:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 051e0fa5346926200b1003a28137cd08 SHA-1: a575618cc67ce144683e67cc253f2fc662e2dc6c SHA-256: 5f74d21163e2913df0adfb30fd05df3edce1c9a6770ca14905dfad31d220acbf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://leonvi.ru/award?keyword=dictionary+of+the+bach+flower+remedies+pdf PDF link annotation
    • https://dibovasejul.weebly.com/uploads/1/3/1/0/131070518/d67772481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368777/normal_5ff7c5d90e3fb.pdfIn PDF document text
    • https://jaxefosizi.weebly.com/uploads/1/3/6/0/136083017/waget-kazubezonufawu.pdfIn PDF document text
    • https://vubilidupetox.weebly.com/uploads/1/3/0/9/130970012/nojotuputopu.pdfIn PDF document text
    • http://jerijoba.iblogger.org/78564410035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450138/normal_600dfa8dd53bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367921/normal_6008d55156dec.pdfIn PDF document text
    • https://jibowosiz.weebly.com/uploads/1/3/4/6/134632869/3242181.pdfIn PDF document text
    • https://xibupitosuxusi.weebly.com/uploads/1/3/1/3/131380094/wafopipova.pdfIn PDF document text
    • http://experiment.website/is_pokemon_liquid_crystal_complete6xmdq.pdfIn PDF document text
    • http://secret-empire.ru/12580316681tg2f0.pdfIn PDF document text
    • https://tuvaruwa.weebly.com/uploads/1/3/4/7/134711775/cf6ccdfdd24978c.pdfIn PDF document text
    • http://fesigemujelepir.66ghz.com/wisiwikexorowenapidanek.pdfIn PDF document text
    • https://batuginuvitewaw.weebly.com/uploads/1/3/4/0/134013132/xabefisufuzujagu.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/tipawikakagukolo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375518/normal_5ff04008e74b6.pdfIn PDF document text
    • https://ponegibafuzixi.weebly.com/uploads/1/3/1/4/131406662/jigowujuxuwi_zevada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kexeban.rf.gd/wiwixowobiwapusafoxud.pdfIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_0e72c37e74bf47469ccc090aa746621b.pdf?index=trueIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_dfbe881b370046ae8f44bc40b9b23467.pdf?index=trueIn PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_3f56348f70ae4421a1ee4a7454738655.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA60 5728 bytes
SHA-256: c88d07e576f0a56a412f10ecf20e73d8c9042e307ce148482b49974ac41b1617
font_01_sfnt_off0000edcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 10628 bytes
SHA-256: 14122ac59cf61ac1ec3da815594215ecb769bd2887c2fe3a20b1847b48944bc9