PDF malware analysis — malicious · 90c1508b47c7eb3a

MALICIOUS

PDF

70.7 KB Created: 2020-12-17 01:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 7b140537970ee039e1b2a10eba809529 SHA-1: 92559742cb26c17e37d308e7ae51ab5a35e72849 SHA-256: 90c1508b47c7eb3aaa3dd9bf12925ad169d25cbb320de972202a1f1493858085

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafftec.ru/aws?utm_term=divan+bed+sheets', which is likely part of a phishing or redirection scheme. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather to host the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/aws?utm_term=divan+bed+sheets PDF link annotation
- https://cdn-cms.f-static.net/uploads/4387035/normal_5fac45925a2b4.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4527902/normal_5fc45289b0ce6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404123/normal_5fa08248346bd.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/daselex/92533266720.pdfIn PDF document text
- https://s3.amazonaws.com/viboxikuz/zunuwimojatodavume.pdfIn PDF document text
- https://s3.amazonaws.com/jiwisigetizoxif/tomuwi.pdfIn PDF document text
- https://s3.amazonaws.com/sikuva/fubovezetover.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7ad1115e-a1d8-4bec-8330-0082b6b15d49/86351985516.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7b16e8c-bd96-4b0a-9011-ecdb4a1a1388/vometu.pdfIn PDF document text
- https://s3.amazonaws.com/pajukovuxetu/kuliv.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2a050a15-07c5-40f3-a257-a32b7ae593c3/nubebebivafirivuzixuwe.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_off0000d8c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8C7	4984 bytes
SHA-256: `09be92fda6c7c1bcac56dcbc70c9c6f9071e7fe1506e1900795febddcd30a5ec`
`font_01_sfnt_off0000e9c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9C1	10892 bytes
SHA-256: `32b54170e344125862ea4fd6f33c2899ae3603bcc358489afd00a2b1aba628cd`

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