PDF malware analysis — malicious · 8c6adda36e9372b0

MALICIOUS

PDF

74.6 KB Created: 2021-01-08 10:05:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: a77a2bb217d3ed45cdcda2f9be372c78 SHA-1: 925d839d6d48e7f5e1131258bda8b698c1d792d1 SHA-256: 8c6adda36e9372b03601ea3d3075904064e43ee87e311ead168da445348f2001

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'trafffi.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a lure related to genealogical trees.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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=que+lleva+un+arbol+genealogico PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421477/normal_5f9b89f34f869.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372960/normal_5f8e0a46260d3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453342/normal_5fbe5f5e43a86.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473053/normal_5fbf6773077ab.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/mujevubutukoxu/unrecognizable_template_declaration_definition.pdfIn PDF document text
- https://s3.amazonaws.com/kabisebax/10042784085.pdfIn PDF document text
- https://s3.amazonaws.com/jasadavebaga/c_o_form_e_l_g.pdfIn PDF document text
- https://s3.amazonaws.com/wovigebi/57173826230.pdfIn PDF document text
- https://s3.amazonaws.com/potofaw/15953740085.pdfIn PDF document text
- https://s3.amazonaws.com/bupijila/adobe_illustrator_templates_resume.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/81453980396.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e63a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE63A	5048 bytes
SHA-256: `446510bfedf5f402afcfacdbf82919e7c16409208688035c808d1d2f387426b8`
`font_01_sfnt_off0000f784.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF784	11460 bytes
SHA-256: `61e91667b01b71b6b82e2fe487c13e34c763e778981ff152cfc0790b0df6a0a4`

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