PDF malware analysis — malicious · 1f8c169347fefab9

MALICIOUS

PDF

67.2 KB Created: 2021-02-10 17:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 4eb75509468fc09b8f0a8f8437de815e SHA-1: eb0ef873aa5cd7dbdf0658f26d54866dea16a32d SHA-256: 1f8c169347fefab9ee4ec3d323e166103327a7d55a2ae3ab363a8035bc3ea485

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, contains text related to 'settlement request letter template', which is likely a lure to encourage users to click on the embedded URLs.

Machine Learning

Nyx PDF Classifier malicious score 0.9962

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
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.
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://baarspo.ru/aws?utm_term=settlement+request+letter+template PDF link annotation
- https://cdn.sqhk.co/lewuravasu/Qijxoge/entrepreneurship_development_programme_in_food_processing.pdfIn PDF document text
- https://pasifoberili.weebly.com/uploads/1/3/4/8/134881239/2678809.pdfIn PDF document text
- https://visimekariluvog.weebly.com/uploads/1/3/1/4/131483525/559b12f278a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450045/normal_5fdfb79170489.pdfIn PDF document text
- http://chelamela.org/92153405255oacdh.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416493/normal_601806dbce1d3.pdfIn PDF document text
- http://aarbuz.space/sutowijowufujonoriwabo7tcvy.pdfIn PDF document text
- https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/0019b121c02d.pdfIn PDF document text
- http://tcerkovniekupola.space/josabodebufibezuzufojik5zmd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4422371/normal_5fca78b70673a.pdfIn PDF document text
- https://cdn.sqhk.co/junigofulum/990ieRr/wemorinoba.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4487663/normal_60071ec0b6620.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/tapexiw/liver_cancer_nccn_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/nodetuxapabara/plush_doll_template.pdfIn PDF document text
- https://s3.amazonaws.com/susonanezaj/mujemipopazexilukukarema.pdfIn PDF document text
- https://s3.amazonaws.com/viwoxuz/54418399054.pdfIn 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_off0000d8f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8F3	4920 bytes
SHA-256: `29b7d6e89937a1f7bf1582a5bdd783012a3089a0917cc2b4aeeda6d85ec19793`
`font_01_sfnt_off0000e98a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE98A	10812 bytes
SHA-256: `a72a4041b6bf5f2c10f2af171003e0a6f6a4991bb5ef3884cae59cf19e82838e`

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