PDF malware analysis — malicious · e6889aa580ca174d

MALICIOUS

PDF

62.2 KB Created: 2020-11-17 19:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2ba1e1f21bb59d4e87c9e426a6798a6b SHA-1: d9eb90d4d2d3b7adf31070de4a828655a2b8a7f0 SHA-256: e6889aa580ca174db5864158e13f1275a8c655d939442548787e0a6c510511ca

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to seemingly benign documents, but one prominent link to 'trafffi.ru' suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Norelco beard trimmer 7200' and 'wkhtmltopdf', suggesting a lure to disguise the malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 5

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://trafffi.ru/123?utm_term=norelco+beard+trimmer+7200
- https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.pdf
- https://wozukofa.weebly.com/uploads/1/3/2/3/132303282/b37e69.pdf
- https://cdn-cms.f-static.net/uploads/4379049/normal_5f991554dbcf4.pdf
- https://telexetobowu.weebly.com/uploads/1/3/4/3/134339901/semidorom.pdf
- https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/xesebopa.pdf
- https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/9880944.pdf
- https://tavumake.weebly.com/uploads/1/3/2/7/132740551/loguzuvonuze_pekil_zoxezeruko.pdf
- https://mubojage.weebly.com/uploads/1/3/4/3/134377346/zasobusoribi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/leguvefu/ncert_books_psychology_class_11_in_hindi_medium.pdf
- https://s3.amazonaws.com/vatosolikijike/low_purine_diet_fact_sheet.pdf
- https://s3.amazonaws.com/pafiganovavi/71934950094.pdf
- https://s3.amazonaws.com/dadupawo/49303058090.pdf
- https://s3.amazonaws.com/luborinizu/87232202287.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b997.bin` `9ccbd41e0b5085dc056bb1e275ca6fbec88657ca9fa5af0cce01d91c54e3f58f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB997	5372 bytes
`font_01_sfnt_off0000cbcf.bin` `6c15edb7a5642fe2df8331737d8ab23e5ada2937a621fd49e125c42381c8a1f5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCBCF	9332 bytes

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