PDF malware analysis — malicious · c9da2d4f61156d02

MALICIOUS

PDF

59.7 KB Created: 2020-12-22 19:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 173b617ea4b4f2da604331d03d097462 SHA-1: eac664c2b4ba7e2b7d5cfa2720c1e41a2c6492e1 SHA-256: c9da2d4f61156d02d7528c8e812d21f3c8da339a8e45f5671af5ad87630126d1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text related to a weather report, suggesting a lure. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URI.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

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/aws?utm_term=leesburg+fl+weather+report PDF link annotation
- https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/daserow.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457604/normal_5fc2f45f529a8.pdfIn PDF document text
- https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/8005319.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367283/normal_5f97b28a99f2d.pdfIn PDF document text
- https://fitetavixanara.weebly.com/uploads/1/3/4/7/134721375/1021075.pdfIn PDF document text
- https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/4841395.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/a895d69c-da0a-4f88-a4c5-aa4ca8268785/10274171144.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc0e0febe9b6939510aa6a3/t/5fc138933570fb44d12f460d/1606498452222/tutti_a_tavola_a_mangiare_pronunciation.pdfIn PDF document text
- https://s3.amazonaws.com/jamuluvuvava/46145086600.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_off0000b031.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB031	5336 bytes
SHA-256: `7ddcff365dfcb36612bdf786cf0ce679f908a70853f17a4320cf68cfb129eb65`
`font_01_sfnt_off0000c267.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC267	9488 bytes
SHA-256: `7b2754741389637fde9837c1a30d30f7a6c0e4f6d35e40b10392d3a447fb26cb`

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