PDF malware analysis — malicious · cfa2b3799b7549d4

MALICIOUS

PDF

78.9 KB Created: 2021-03-19 19:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b4ed55111c9712eb0f2ac9464e5992d2 SHA-1: 7ce091b246bd894a4ab15b4dbdbe01333a86ddc3 SHA-256: cfa2b3799b7549d480556c8a7704273625d797f3a7fc441e8ab181941f85e41d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of external URIs, including one pointing to 'golowaki.ru', suggests the document is part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used to redirect users to malicious sites or download further payloads.

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://golowaki.ru/wix?keyword=french+laundry+cookbook+pdf
- https://cdn.sqhk.co/dezuvosowato/gegiNM6/11202180110.pdf
- http://itravelgr.com/fifavoxekoraxwyjs4.pdf
- https://cdn.sqhk.co/nupozifulija/frz1jc9/lbs_to_kg_nursing.pdf
- http://playmarket-online.com/the_norton_anthology_of_modern_and_contemporary_poetry_3rd_editioni3dq0.pdf
- http://adanakebap.org/lifubutirumify85mo.pdf
- http://christinaanddavid2019.com/2118739530kd9af.pdf
- http://ontrade.top/9293297858hv1x5.pdf
- http://trysucre.pro/51127258551olqbo.pdf
- https://kuduxuke.weebly.com/uploads/1/3/5/3/135323303/1129479.pdf
- https://vakikuxikedeti.weebly.com/uploads/1/3/5/3/135320305/3029589.pdf
- https://venevivoxeda.weebly.com/uploads/1/3/1/8/131857756/7417900.pdf
- http://fitdieta.com/lixeruxesidaltdery.pdf
- https://jakineporop.weebly.com/uploads/1/3/5/3/135302356/pijivaner-lokebanowojuru.pdf
- http://copyrightreports.com/66785293502k8dyd.pdf
- http://ing-cliente.com/declaracin_universal_de_los_derechos_humanos_ecuadors4p5c.pdf
- https://tofavasexivefet.weebly.com/uploads/1/3/4/5/134578877/5062753.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/pegebunov/isth_guidelines_hemophilia.pdf
- https://s3.amazonaws.com/pajukovuxetu/tewubozi.pdf
- https://s3.amazonaws.com/dalava/mamakaregozawobenagafufod.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f677.bin` `e7eaf36c2cd5cfd2c0cee7088e501fd4b5c5217765d4b311214a3b876558718f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF677	5324 bytes
`font_01_sfnt_off00010898.bin` `e8f2459eb42ba5536ecb8f18a9d84d54d8591e5b27364443e121011600b69ab2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10898	11368 bytes

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