PDF malware analysis — malicious · 2edd13eeb77fc19d

MALICIOUS

PDF

67.6 KB Created: 2021-01-17 14:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 932a1de97893008082f70426ae7caccb SHA-1: ce26aa17d7f4d7e12082118ce1ad868fbb8c4a25 SHA-256: 2edd13eeb77fc19df72cad5b9e83978c7f3416e5cd285542f60d3e45f01f0f05

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to redirector infrastructure or potentially malicious content. The ClamAV detection and ML classifier further indicate malicious intent. The embedded URLs suggest an attempt to redirect the user to external sites, likely for phishing or to download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.8239

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.
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.
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://traffine.ru/aws?utm_term=verb+to+be+practice+worksheets+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4449014/normal_5faa03baa2a62.pdfIn PDF document text
- https://site-1171695.mozfiles.com/files/1171695/rush_limbaugh_podcast_youtube_september_25_2020.pdfIn PDF document text
- https://site-1177663.mozfiles.com/files/1177663/siwoladefiwes.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366324/normal_5f87715db4954.pdfIn PDF document text
- https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/0218868d694b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413867/normal_5f9a8fc210ad3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368489/normal_5fc5fa8ce30e9.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/xabalaru/digestive_system_chart.pdfIn PDF document text
- https://s3.amazonaws.com/xisakazelelinim/47414475298.pdfIn PDF document text
- https://s3.amazonaws.com/posufij/23184611316.pdfIn PDF document text
- https://s3.amazonaws.com/litunux/forms_of_energy_worksheet_grade_5.pdfIn PDF document text
- https://s3.amazonaws.com/makumapikeze/kojedikoxifetakomufed.pdfIn PDF document text
- https://s3.amazonaws.com/tinivukedeta/rcm_music_bhojpuri_video_2019_mp4.pdfIn PDF document text
- https://s3.amazonaws.com/tupofelasujewas/38155656558.pdfIn PDF document text
- https://s3.amazonaws.com/fidefofudi/christmas_images_jesus.pdfIn PDF document text
- https://s3.amazonaws.com/rodiligarexo/milestone_chalkboard_template.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e1b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1B2	5472 bytes
SHA-256: `264fff93551c54822ca20784397dc4d04f97cfd9605bd2ba8e154f778bc45f78`

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