PDF malware analysis — malicious · cbdc451dc62d0059

MALICIOUS

PDF

74.6 KB Created: 2021-03-24 13:35:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6cb79d5f24e281c88f2eca0e1a748f97 SHA-1: 27eafe44a1a7f2f022d41ed957191c12522e8866 SHA-256: cbdc451dc62d00590e151704acb46f9a9d43fc5bfead391784b8f9a9138ec967

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though partially corrupted, suggests a lure related to sheet music, which is a common tactic for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://maypoin.ru/award?keyword=alfonsina+y+el+mar+partitura+pdf+gratis
- https://cdn-cms.f-static.net/uploads/4416792/normal_60511331b1cb4.pdf
- https://cdn-cms.f-static.net/uploads/4383681/normal_601755794d143.pdf
- http://cucoupon.info/69003497254ljscz.pdf
- http://choosemadam.site/xapeneruxagokurabariy1pt0.pdf
- http://svarka-aurora.online/contract_law_cases_and_answersdb69s.pdf
- http://mamontov-net.cc/bokepukexugubanawofx5nro.pdf
- http://prosale.company/529653623980tphg.pdf
- https://cdn-cms.f-static.net/uploads/4381976/normal_5fd6e8165c79d.pdf
- http://tokudujadi.medianewsonline.com/6411420830.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gixirojozogufux/nefiromevetewemumu.pdf
- https://s3.amazonaws.com/loneminovu/wimutomorimarulupikiveseb.pdf
- https://s3.amazonaws.com/tuxenipup/why_my_bluetooth_not_working_on_iphone_6.pdf
- https://s3.amazonaws.com/gedesisumi/72215740499.pdf
- https://s3.amazonaws.com/janodojivi/determining_density_of_water_lab_report.pdf
- https://s3.amazonaws.com/tejuvonixag/55771945531.pdf
- https://s3.amazonaws.com/povelenavuviw/avanti_feeds_annual_report_2016-_17.pdf
- https://s3.amazonaws.com/zalomi/22862379533.pdf
- https://s3.amazonaws.com/fofeguj/gerepefife.pdf
- http://wavexijazibivat.myartsonline.com/nezipudaragimisopaliw.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_off0000e2a9.bin` `39814bd60d1b36cf9353d601f9d7c9edf483cdb9d9609df0a82478eda037f0d0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2A9	5452 bytes
`font_01_sfnt_off0000f52e.bin` `538ca9bfdb43e5101080c63d8395baca741e4471b8f5f8847185c659ef223883`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF52E	11984 bytes

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