Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e94d2df0064745c…

MALICIOUS

PDF

74.7 KB Created: 2021-01-02 22:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d638c962c475298d7808c31a377d2664 SHA-1: e93d4d9c5e6765f0c4e1f9ceb86a8c70e704ec18 SHA-256: 6e94d2df0064745cd8ed18a18854b02fcde433f3965b403d159d52acdd506d01
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 as a 'PDF_SEO_LINK_FARM' heuristic, suggesting a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly indicate maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a phishing or link-farming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/123?utm_term=lines+and+angles+practice PDF link annotation
    • https://lokenomosotim.weebly.com/uploads/1/3/4/4/134499182/fe6b4ff.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/hapP4qV/80302145098.pdfIn PDF document text
    • https://mabalavorejeg.weebly.com/uploads/1/3/4/7/134769590/4003524.pdfIn PDF document text
    • https://butegipabozu.weebly.com/uploads/1/3/4/2/134235803/zigimif.pdfIn PDF document text
    • https://xisiwazebisa.weebly.com/uploads/1/3/4/7/134758569/4111619.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nukunuraki.pdfIn PDF document text
    • https://fopulowaledini.weebly.com/uploads/1/3/1/6/131637921/38511efbb25.pdfIn PDF document text
    • https://levalezekavazif.weebly.com/uploads/1/3/4/6/134639406/rimobevivejo-xujozoriwuraw-nuguxozukaboka.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/wilugugo/risasatafugafuvekipudu.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/31079776174.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/music_artist_management_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/certificates_templates_png.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/mortified_guide_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/38413275468.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_off0000e64c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64C 5184 bytes
SHA-256: 22c49c306f12435de2d7f0f0df4cddefa37e68721b0688d3757f539a671c195b
font_01_sfnt_off0000f802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF802 11248 bytes
SHA-256: 7713c5eae0e660e17fad66fa76a4689c78bbd4707eb75def48190dd8f5eb5b40

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