PDF malware analysis — malicious · 307866594d2f0c95

MALICIOUS

PDF

75.4 KB Created: 2020-12-27 11:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 7b631f00460da0c61d4a3c5dcc28e79e SHA-1: 1f931326735d6b27f365371eb226ff9e18e6275c SHA-256: 307866594d2f0c95007992980fcf5a52705f67416d2bc1cc41e68c7ff8e2fe99

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a known malicious domain, traffmen.ru. This suggests a phishing or malware distribution attempt, masquerading as educational material. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9907

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://traffmen.ru/123?utm_term=exponents+worksheets+pdf+5th+grade In PDF document text
- https://static.s123-cdn-static.com/uploads/4382186/normal_5fce918bdc947.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381085/normal_5f9ab69166680.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486997/normal_5fb8ed833b808.pdfIn PDF document text
- https://cdn.sqhk.co/zotipimesaza/PgemBic/gmail_sign_up_for_child.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367961/normal_5f9be4f0419e0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/48a1eaca-dcb6-4dd9-acf6-538722a8643c/38043640410.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82ab9bbf-0ea3-4ed7-9fef-65606c4bda47/alta_hr_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a972a05b-5363-412a-af6a-f1a53cd8ddce/geometry_dash_2.0_descargar_para_pc.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_off0000ea36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA36	5576 bytes
SHA-256: `fe0a7bd19c19ba578d7d6519503c43099976b14953782562aa387eec4885cfde`
`font_01_sfnt_off0000fd45.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD45	10500 bytes
SHA-256: `fb72e9cb8dea352516f9cde4cbb143a928f6b1f9c8d5061d711aef63a7a588b5`

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