Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8f135e6850a0e9…

MALICIOUS

PDF

69.3 KB Created: 2021-02-21 07:49:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ec6dc71b7a6fd6cb291f74fb8dfcf375 SHA-1: 864cde684e2bc22aa33170ad3289532d15c0e937 SHA-256: cb8f135e6850a0e92652303d693cb34f4456254718191c508df3ceaba799d6e9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=dividing+polynomials+practice+worksheet+answers PDF link annotation
    • http://private-channel.site/29943276759podp2.pdfIn PDF document text
    • https://ximesadi.weebly.com/uploads/1/3/0/9/130969353/novowamejurute_nenivomamul_fovasefiz.pdfIn PDF document text
    • https://tatabano.weebly.com/uploads/1/3/4/8/134850833/5434530.pdfIn PDF document text
    • http://nasty666.space/pudulnqat9.pdfIn PDF document text
    • http://innov-cis.net/manual_autocad_electrical_2018_espaolvsgf7.pdfIn PDF document text
    • http://lnstagramcentre.net/persuasive_essay_outline_templatevcy89.pdfIn PDF document text
    • https://sabizedikidoxar.weebly.com/uploads/1/3/2/6/132681903/9d0ee1.pdfIn PDF document text
    • https://bifomika.weebly.com/uploads/1/3/1/8/131856700/jijinabonu_jiziju.pdfIn PDF document text
    • https://juxusuvib.weebly.com/uploads/1/3/0/7/130739690/9161694.pdfIn PDF document text
    • https://fufukarebalomok.weebly.com/uploads/1/3/4/3/134352968/3906736.pdfIn PDF document text
    • http://circulshtangcalip.website/monudae4xft.pdfIn PDF document text
    • https://xovawezovikax.weebly.com/uploads/1/3/0/9/130969403/148dd970.pdfIn PDF document text
    • http://sbrf.link/guardian_knights_best_starterveu3a.pdfIn PDF document text
    • http://hardcreditcheck.info/77694316541g7x07.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/tazopaju/browser_android_paling_ringan.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/nexafaxewofejexulet.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/android_deep_link_url_example.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/72697601310.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/23127447157.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_off0000d185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD185 5804 bytes
SHA-256: 29d5bfe79cf2fe6ab18f668a855372a57941e1baf31ec689822d586a59168b4c
font_01_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 10160 bytes
SHA-256: 4efdc0a7a1e5f3fe0ad6c09e548563242ebd8ae70b722925899329d9a872925a

Open this report in the interactive analyzer, or submit your own file for analysis.