Malicious PDF — malware analysis report

Static analysis result for SHA-256 6847cc46a9658cbb…

MALICIOUS

PDF

82.7 KB Created: 2021-02-27 10:06:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 6fcd9985625a5d97964bbe70019fc148 SHA-1: ebf907e1051c5a20301706e8db430471cac42a06 SHA-256: 6847cc46a9658cbba07bb81b55117ff1a75ab6944cbd4598fcf13d7a098dcaa2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV specifically identifying it as Pdf.Phishing.Trojan. The presence of embedded URLs and the nature of the heuristics suggest a phishing or SEO spam campaign, likely intended to direct users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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/wix?keyword=ffxi+goldsmithing+guide+nasomi PDF link annotation
    • http://tomefitavi.22web.org/jfk_book_why_england_slept.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372707/normal_60053b30b77dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_6017ce3d437de.pdfIn PDF document text
    • https://rajopolaxobi.weebly.com/uploads/1/3/1/4/131406270/4e2b1b0865.pdfIn PDF document text
    • https://gubukaxonular.weebly.com/uploads/1/3/5/3/135349028/57bcd989.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_6038b78c08c70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_601a4cded5579.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529087/normal_5fc9464e676c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489588/normal_5feb9a941d84c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413121/normal_602c74fee22da.pdfIn PDF document text
    • https://zujamabosav.weebly.com/uploads/1/3/4/3/134363941/5417124.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420776/normal_5ffe959d2e8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388833/normal_600a6a45b614c.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/dikobepibelun/plan_de_negocios_para_una_escuela_de_ingles.pdfIn PDF document text
    • http://rimupikerotazes.rf.gd/battlefield_3_pc_completo_crackeado.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/9129337307.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/esclerosis_multiple_recurrente_remitente.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/wavepad_sound_editor_full_version_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/mufidimadazez.pdfIn PDF document text
    • http://rivelik.epizy.com/20428362128.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/carers_credit_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/simple_and_compound_sentences_worksheet_grade_4.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_off0001019f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019F 5248 bytes
SHA-256: 04c0980928d73fbf58cc1f75c998014e1f4d74d241db53ba813888832692d097
font_01_sfnt_off00011368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11368 13012 bytes
SHA-256: 1e00e1bc2bc4c5884d6f72036c4f09c6cd40dbc0f8be3bf1127b3bb41784465b

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