PDF malware analysis — malicious · 0c57a5b5a5479c14

MALICIOUS

PDF

80.0 KB Created: 2021-01-04 11:52:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 54a8c1d336416b84e8f44bd9e44fe16c SHA-1: 78a16207076720f2cb37560d2d7fdc5c7e3fed31 SHA-256: 0c57a5b5a5479c140c2c0324cbb24ad2cc796d3e3afbb4b3725639604147467d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that directs users to a website disguised as a Lexmark ms510dn user manual. This URL is likely a phishing lure to steal user credentials or deliver further malware. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://trafficel.ru/123?utm_term=lexmark+ms510dn+user+manual PDF link annotation
- https://cdn-cms.f-static.net/uploads/4450156/normal_5fdc7547d7584.pdfIn PDF document text
- https://cdn.sqhk.co/kewudomavave/jf5jejb/vovedepip.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370076/normal_5f88205c224e3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376374/normal_5fa16c0e5b972.pdfIn PDF document text
- https://cdn.sqhk.co/gadukupuwe/hdhfdid/zubud.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444123/normal_5fb6bf22848c0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415974/normal_5fc4246372838.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486367/normal_5fb31bdaa1221.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402297/normal_5fa3c83c54960.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411252/normal_5f9a088c3e071.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421939/normal_5f98ab62abac2.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/8002797e-162c-4730-8f5e-8c7f839d2741/beowulf_grendels_mother_true_form.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_off0000fcea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCEA	5360 bytes
SHA-256: `7308eb4d3915f310a9e25b7feefc15755d107751c177c4bda1b2c9266d278f84`
`font_01_sfnt_off00010f1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F1B	10588 bytes
SHA-256: `7a0598844f9fe403d9357590f2eef494ac8fb1f68b111a8687cec5b36226aae2`

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