PDF malware analysis — malicious · 48106bac8e430140

MALICIOUS

PDF

83.6 KB Created: 2021-02-23 21:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 3e25122a208860f08c4b60f3c7d96b3e SHA-1: 67638d6217c3cfb4c8c6ea1ef7b674986eaa521c SHA-256: 48106bac8e430140376e2e4c4da24514faa16c54c0397a374c1beebcd439ae58

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, contains keywords related to job searching, suggesting a phishing lure. The presence of multiple suspicious URLs further supports the phishing attack pattern.

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/wix?keyword=darien+arts+center+jobs PDF link annotation
- http://shoop-fn.ru/architectural_drawing_definitionje2uf.pdfIn PDF document text
- https://cdn.sqhk.co/votojuxosaf/dWQlidD/boat_fishing_simulator_codes_2020.pdfIn PDF document text
- http://copyrights-notices-helps.com/nobuvadirojowerezubob9ph4.pdfIn PDF document text
- http://ujjjrrrrr.space/81629653532wyh5x.pdfIn PDF document text
- http://begemot.space/gegugipmmq2.pdfIn PDF document text
- http://lozhobelir.space/school_management_committee_meeting_report7wg19.pdfIn PDF document text
- http://best-store.club/nujopona7gayc.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/jiwisi/naruto_manga_volume_13.pdfIn PDF document text
- https://s3.amazonaws.com/xotomisen/bsr_full_form_in_pharma_industry.pdfIn PDF document text
- https://s3.amazonaws.com/jotizifime/dofixada.pdfIn PDF document text
- https://s3.amazonaws.com/befafuni/87023702975.pdfIn PDF document text
- https://s3.amazonaws.com/vatosolikijike/optiplex_5070_release_date.pdfIn PDF document text
- https://s3.amazonaws.com/zaxefemebidaz/kavugisu.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_off00010cb7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10CB7	4976 bytes
SHA-256: `4cf7121397d0486596a8da7ac1f651eec2b2b6478477a83c1aa3d0b960887ce8`
`font_01_sfnt_off00011db7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11DB7	10420 bytes
SHA-256: `1c61f9240db70e52384cf223cd203454bba143df694502f750155b68129d9c52`

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