PDF malware analysis — malicious · 1cfb8c57ca41573a

MALICIOUS

PDF

58.3 KB Created: 2020-12-22 19:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a490fbe84bf482e7d3f24708a75fd242 SHA-1: 03913c8175da0042f30dd52d27eba355e4f5e1e0 SHA-256: 1cfb8c57ca41573aa712d1b6954931abd2a3890bfdea5c8c6de0c4b9db5d2555

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, with one prominent URL pointing to 'traffking.ru', suggesting a phishing or malware distribution attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, further supporting this. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML classification strongly suggest malicious intent, likely related to spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.8068

Heuristics 4

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-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
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://traffking.ru/strik?utm_term=data+smart+switch+samsung+to+iphone
- https://fagozeku.weebly.com/uploads/1/3/4/5/134506452/bupadoso.pdf
- https://uploads.strikinglycdn.com/files/77d78330-4df3-4722-901a-dc8a34ccc42c/reflections_springfield_il.pdf
- https://uploads.strikinglycdn.com/files/aecff1b4-9676-427b-8327-d10056957480/52841231105.pdf
- https://uploads.strikinglycdn.com/files/dbf538d1-94c9-4f66-99a6-5e4319851db2/fuzemugunaxalolukogebuxe.pdf
- https://s3.amazonaws.com/gezetega/journal_of_applied_microbiology_author_guidelines.pdf
- https://s3.amazonaws.com/bogeguva/95079932669.pdf
- https://s3.amazonaws.com/netinuwa/mousehunt_map_solver.pdf
- https://uploads.strikinglycdn.com/files/eddfee43-2067-4a46-8903-e947e454c610/tutapojuwewogidibibusu.pdf
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf65663485235c86be5ffb/1606378856653/27604750969.pdf
- https://static1.squarespace.com/static/5fdcb8151ac7e22a65153ef0/t/5fdcf8a663b3fc57bde8ddaa/1608317095633/donelle_collection_sheets.pdf
- https://s3.amazonaws.com/garorowa/un_lugar_en_silencio_2.pdf
- https://static1.squarespace.com/static/5fc0c991c6d9645836219624/t/5fc128754e98326c0239bb52/1606494325259/gexadotabun.pdf
- https://s3.amazonaws.com/rotowan/peoplesoft_9.2_installation_guide.pdf
- https://uploads.strikinglycdn.com/files/dae0071e-ebcb-4c16-904e-f52e852855e7/81143303829.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ce1e.bin` `45b6489e684fc02789658762b2f6af2af859e8556da6044489efb5b9db4362d3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE1E	4048 bytes

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