PDF malware analysis — malicious · d6a712b89b08f5eb

MALICIOUS

PDF

67.6 KB Created: 2021-02-19 12:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: c04e7266a5ccf73fb645b4132b623c5e SHA-1: 7dc38ce63800bc56208f9354dfb8a1b138977634 SHA-256: d6a712b89b08f5eb69c6a153a67739178f2b5d8797cb9dcc80df09be7c132340

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.7648

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://yafferge.ru/strik?utm_term=how+to+find+crystals+in+western+australia In PDF document text
- https://fuxarudoniw.weebly.com/uploads/1/3/5/3/135350341/cf86d1fc.pdfIn PDF document text
- https://cdn.sqhk.co/patizuruf/Bjchjhj/gulerogopemababis.pdfIn PDF document text
- https://cdn.sqhk.co/tuvasovosew/ASdjaoM/kuvinozerese.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373248/normal_601717c72f4c1.pdfIn PDF document text
- https://tizidebiwefixim.weebly.com/uploads/1/3/0/7/130739379/semejumuzilus.pdfIn PDF document text
- https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/magasakorerib.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4464052/normal_601098a6e13ca.pdfIn PDF document text
- https://cdn.sqhk.co/setawigiz/fwNjjge/escape_plan_cast_1.pdfIn PDF document text
- https://rusofejez.weebly.com/uploads/1/3/1/8/131856127/foteruvisix.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/vuforewebub/learn_cakephp_with_unit_testing.pdfIn PDF document text
- https://s3.amazonaws.com/vabemavuputenif/batman_arkham_asylum_pc_size.pdfIn PDF document text
- https://s3.amazonaws.com/seriposuj/19492419768.pdfIn PDF document text
- https://s3.amazonaws.com/xakajoziwibi/crowdfire_mod_apk.pdfIn PDF document text
- https://s3.amazonaws.com/bakoloj/dd_players_handbook_audio.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_off0000d62a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD62A	5052 bytes
SHA-256: `e64aa99335f0a593d9f4f21f2b3fb9a7cfb011240e54fa11da3d15e85eb85b9e`
`font_01_sfnt_off0000e776.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE776	10920 bytes
SHA-256: `cba2ec6d806dd8d984b0bc35a1609e22bc039141f045147349002abdee0f92d3`

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