PDF malware analysis — malicious · 773ffc1348e720ae

MALICIOUS

PDF

61.9 KB Created: 2020-12-07 00:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 9930d250d177348ae8f8be4581cc6b59 SHA-1: 1ca0f1d0919a0725b44fa292dce4c67d2fd43558 SHA-256: 773ffc1348e720ae84f7eee5d2f66abf4df043ad776e744feb482319aaa35931

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=andy+warhol+flowers+bearbrick PDF link annotation
- https://static.s123-cdn-static.com/uploads/4479451/normal_5fcab25b22f68.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390057/normal_5f9697ea360a3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4451018/normal_5fb2a7b8b3a40.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459058/normal_5fa7d02499934.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366047/normal_5fa1b8e0e767c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4493917/normal_5fcce48b9be0a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4455881/normal_5fa1f55044c3d.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/vitelitubovuluj/bidivitir.pdfIn PDF document text
- https://s3.amazonaws.com/nilafafakem/tujosuvuxawobosumurexub.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/94576653174.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/70762437368.pdfIn PDF document text
- https://s3.amazonaws.com/xuvamuba/sivusoratedepovona.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_off0000b12f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB12F	5496 bytes
SHA-256: `c7bc8e24253edbcc59b9c5c3ec3b7a789a11a699c886cf7b0267065a351ac3aa`
`font_01_sfnt_off0000c3fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC3FB	11676 bytes
SHA-256: `fae387465c82b871eba589cf4722d74c5df941b92d3c6927c6c8924fc22ff846`

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