Malicious PDF — malware analysis report

Static analysis result for SHA-256 4147c6e714d0bda6…

MALICIOUS

PDF

73.5 KB Created: 2021-02-21 11:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ca5a80f1459c9aa028e8ef3d956010fb SHA-1: c05735503726ecbc3f3c34a270cc1b182bd37d31 SHA-256: 4147c6e714d0bda6e59705b1220ca290d9488c048d861f235baca8b6d4d893a8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/wb?keyword=data%20science%20remote%20jobs%20europe PDF link annotation
    • http://filanion.online/romanesk_mimari_zelliklerixk8js.pdfIn PDF document text
    • https://fewebiporunivag.weebly.com/uploads/1/3/0/7/130775920/9412251.pdfIn PDF document text
    • https://zokaguwozan.weebly.com/uploads/1/3/0/7/130738936/57602eb32dba9.pdfIn PDF document text
    • https://wumefabifu.weebly.com/uploads/1/3/4/8/134888429/molosuw-dejarepiko-befokonul.pdfIn PDF document text
    • https://jetezilim.weebly.com/uploads/1/3/0/7/130775858/a42eb3718abe.pdfIn PDF document text
    • https://torofijode.weebly.com/uploads/1/3/5/9/135978969/b7eb1.pdfIn PDF document text
    • https://kowuzuworos.weebly.com/uploads/1/3/2/6/132682574/zasupuze_zuruwexito_wodegu.pdfIn PDF document text
    • http://familyit.info/fepevefalibirutawetufaj4ca.pdfIn PDF document text
    • http://idealicaitalia.website/getting_into_the_vortex0dntp.pdfIn PDF document text
    • https://tufafoselebore.weebly.com/uploads/1/3/5/3/135389740/37ff1.pdfIn PDF document text
    • http://hr-insider.com/what_was_lincolns_reconstruction_plan_quizletjo3kp.pdfIn PDF document text
    • http://art-practice.org/2009477795320wyc.pdfIn PDF document text
    • https://vonufire.weebly.com/uploads/1/3/4/5/134596457/e310c9fa.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/begijufadi/13383230212.pdfIn PDF document text
    • http://pinogizege.rf.gd/xomugopudebaloxanol.pdfIn PDF document text
    • http://kaseborodemo.rf.gd/nikon_n2000_film_camera.pdfIn PDF document text
    • http://sufojokene.rf.gd/48495332652.pdfIn PDF document text
    • http://pexaniruvuwuwe.rf.gd/89129132916.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_off0000e1f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F9 5264 bytes
SHA-256: d282d314a1c92e713c7f83cbf8dc1b0a47017175eda5f3fc570dcf4553ba2db4
font_01_sfnt_off0000f3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CC 11004 bytes
SHA-256: 23c0e9ead658435f875d120db2c72f22bdc8d4a97a2bc289dc04a1f9b4bc52df