Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2fc62964a141e5…

MALICIOUS

PDF

71.3 KB Created: 2021-02-22 19:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 540ab7d60ca1df1ad5e3d5a89654e90f SHA-1: 537dc9cd42b42e668afcdf912f58df926f296a6a SHA-256: 4e2fc62964a141e51fcbdba9c3ced3c8267d869b935264eceb47d85cdc16be30
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://baarspo.ru/wix?keyword=formation+of+alcohols+by+the+hydroboration-oxidation+sequence PDF link annotation
    • https://zomogazafef.weebly.com/uploads/1/3/5/3/135348967/5247519.pdfIn PDF document text
    • https://jomimufigaz.weebly.com/uploads/1/3/4/3/134319247/fizobokuxuwaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476420/normal_602970920c417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473632/normal_601aaae3822c7.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/6d4e9c230922d.pdfIn PDF document text
    • https://lirodenagegoket.weebly.com/uploads/1/3/1/4/131437677/lejujuw-sasenarisibul.pdfIn PDF document text
    • https://lamonide.weebly.com/uploads/1/3/4/0/134096931/4887289.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498348/normal_6003d3947f229.pdfIn PDF document text
    • https://megigoxifiwovom.weebly.com/uploads/1/3/0/7/130740625/93787e5c61b763c.pdfIn PDF document text
    • http://vuxokiwi.22web.org/faxoxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rakimeramut.epizy.com/93195510691.pdfIn PDF document text
    • http://livofos.epizy.com/breakin_2_electric_boogaloo_soundtrack.pdfIn PDF document text
    • http://jigosip.epizy.com/38890500026.pdfIn PDF document text
    • http://ziwebizivag.epizy.com/81547768132.pdfIn PDF document text
    • http://xitiwefebulu.rf.gd/zedupejezazedin.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_off0000d89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89D 5684 bytes
SHA-256: b275cc9490e76449159351711d1cccd0af5fbe0d4e386ad7471b0b831c8146f0
font_01_sfnt_off0000ebd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD1 10572 bytes
SHA-256: 331c82c568a54ed0b6444c87c29439a979b6f5ef40bcdd0d92a4392e272c5597