Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e12d237fa1be70…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 02:27:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b6437a4245b19f23b6b824e733b9e79 SHA-1: 062274d11b426b4d3747824672be2f8ea046ff5d SHA-256: 33e12d237fa1be70f938831b54c12989944aa0063a9cfa0ba02b99810f5615ff
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://druttle.ru/wix?keyword=my+backup+pro+apk+chomikuj PDF link annotation
    • http://vuvufese.22web.org/excel_spreadsheet_rotate_columns_rows.pdfIn PDF document text
    • http://avit0.cc/63613968274qxirq.pdfIn PDF document text
    • https://girosiwubu.weebly.com/uploads/1/3/0/7/130740458/5845269.pdfIn PDF document text
    • http://zvezdasevera.online/18491806968turst.pdfIn PDF document text
    • https://jamiwimavebu.weebly.com/uploads/1/3/1/4/131453695/7958271.pdfIn PDF document text
    • https://toxedozopofezi.weebly.com/uploads/1/3/1/4/131453782/nakufiviziwubetek.pdfIn PDF document text
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/getarupal-losajidenise.pdfIn PDF document text
    • https://dogusomuribe.weebly.com/uploads/1/3/0/8/130814063/4842552.pdfIn PDF document text
    • http://mjawebdesign.net/14088494834cwqge.pdfIn PDF document text
    • https://dixonojobu.weebly.com/uploads/1/3/3/9/133997274/054e8b.pdfIn PDF document text
    • http://leoidet.xyz/diwasexijamido1lj.pdfIn PDF document text
    • http://rululidevasuv.22web.org/wobaxewoferenobinorabiles.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mavoxigu.rf.gd/bol_tere_meethe_meethe_dj_song.pdfIn PDF document text
    • http://jaxegowanav.rf.gd/nodepe.pdfIn PDF document text
    • http://ridexinawaje.epizy.com/4308092418.pdfIn PDF document text
    • http://rotitow.rf.gd/subject_pronouns_worksheet_with_answers.pdfIn PDF document text
    • http://voxotili.epizy.com/73246940796.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA38 5352 bytes
SHA-256: 2906438b7414f40ee36a53f5adadc546960fcf65c28879af9d5e89de5c9ea826
font_01_sfnt_off0000dc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC59 11808 bytes
SHA-256: 059cceb00afc0c8ee2121f9deafed97d16ae24bd126a927cd41f70220472fca5
font_02_sfnt_off000101ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EC 16196 bytes
SHA-256: 53a0e130f2371045e1ebbcca70a024b76227e3615a461c216ef7b7af1994dcbb