PDF malware analysis — malicious · ecda04c0f0dbf70a

MALICIOUS

PDF

70.6 KB Created: 2021-01-11 18:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 405ead2aae6e76e53a561465feda408d SHA-1: 7c60fa308c21eabe7aa42241344ffde8c6058728 SHA-256: ecda04c0f0dbf70a01ea8b05a3cba94d64c93e03b911fbeb28231476796ece9f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. An external URI pointing to 'trafffi.ru' was extracted, suggesting the document is designed to redirect users to a potentially harmful site. The presence of embedded URLs and the overall classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

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=bullets+in+excel+2007 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4387919/normal_5fa5605ac0425.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369631/normal_5f894229346e0.pdfIn PDF document text
- https://famojiwogupoj.weebly.com/uploads/1/3/2/3/132303340/960a4b2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377642/normal_5f89f98c8d70c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370269/normal_5ff3e92981544.pdfIn PDF document text
- https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/gozuzig.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473654/normal_5fcf58dd42292.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4471960/normal_5ff10cd653f41.pdfIn PDF document text
- https://cdn.sqhk.co/bitaxukezor/5WpDqMi/varulujovasi.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/radubozufiwo/official_guide_to_the_gmat_2019.pdfIn PDF document text
- https://s3.amazonaws.com/somisilegex/lejomajoki.pdfIn PDF document text
- https://s3.amazonaws.com/xonobijikivo/fuvokalovamukulafe.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_off0000d817.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD817	4956 bytes
SHA-256: `7044a3f9ee7f253a57f87a62f88325254a8740a7f3e80e7f2bd3f8804ab9c260`
`font_01_sfnt_off0000e924.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE924	11128 bytes
SHA-256: `7d8b802e9c37d15983c4905ecc45c9eeb0be6c3e8fa3991ac829089569381049`

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