PDF malware analysis — malicious · 977f066ae8d217e8

MALICIOUS

PDF

77.1 KB Created: 2021-02-20 04:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21

MD5: a4dca74307d54c7a15534d20cc6c5c75 SHA-1: df2344afdb6795b558fd3c06d674c4633e6d0f86 SHA-256: 977f066ae8d217e8b9963318ef85774ad778776df60c8304ce69824827b34e8d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified by both heuristics and ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
External URI info PDF_URI

PDF contains an external URL action
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://jacksth.ru/wix?keyword=funny+butler+toilet+paper+holder PDF link annotation
- https://cdn-cms.f-static.net/uploads/4466368/normal_602a1f810116c.pdfIn PDF document text
- https://cdn.sqhk.co/sojowidaz/jPkhagd/22396105871.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405660/normal_601a4bf0b1018.pdfIn PDF document text
- http://zijogodakenanaf.22web.org/asana_meeting_templates.pdfIn PDF document text
- https://cdn.sqhk.co/pegipoveridi/jdhijh2/facebook_portal_zoom_virtual_background.pdfIn PDF document text
- http://glasshookahcatering.com/mawanewerufaop5l4.pdfIn PDF document text
- https://cdn.sqhk.co/belerudoxej/QkghhgB/54265594980.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371247/normal_6022f6fa51f5d.pdfIn PDF document text
- https://cdn.sqhk.co/birenejar/eichjgg/bimamilalen.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387816/normal_5ff0404e8149c.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://zifawikixeliba.epizy.com/unicellular_organisms_examples.pdfIn PDF document text
- http://xaxevuvu.epizy.com/soal_dan_pembahasan_medan_listrik.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_off0000f1af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF1AF	5068 bytes
SHA-256: `c5900b562860eb0dfb745250d93f12cec2398ee7def7c8664f4c786144ec25a3`
`font_01_sfnt_off000102e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102E3	10672 bytes
SHA-256: `f9b29456b5f835080b8de42af365189b16b776527e6ca99fa2e5996c9100efd6`

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