PDF malware analysis — malicious · aa5463c99f78957c

MALICIOUS

PDF

70.8 KB Created: 2021-02-18 00:59:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: e977853b6bb46a47565cd1b77e84b86d SHA-1: 489cb73285748659549a2a9e090f3187b525d4c1 SHA-256: aa5463c99f78957c0ac468f616b61ecdcd9ca023c94d1ddcd735823b2966d0bb

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that mimics a search result, likely intended to trick users into clicking it. The presence of multiple suspicious URLs suggests a phishing or credential harvesting attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=how+much+does+it+cost+to+spay+a+female+pitbull PDF link annotation
- https://cdn.sqhk.co/jotepomi/fmonHJ6/bulk_spiral_notebooks_wide_ruled.pdfIn PDF document text
- https://cdn.sqhk.co/pevedapev/bkSjeK7/94999153666.pdfIn PDF document text
- http://vatirigidofaxu.iblogger.org/delofig.pdfIn PDF document text
- http://fb-ig-violation.com/wofilafavalixue1xq.pdfIn PDF document text
- https://cdn.sqhk.co/vinasujitupe/gia2jjQ/ganibof.pdfIn PDF document text
- https://cdn.sqhk.co/fafaviwi/hbJdsge/movies_coming_out_in_august_2020_uk.pdfIn PDF document text
- http://lastasked.com/deer_predation_or_starvation_analysis_answer_keyo6v2q.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/nisiwanolom/32410896902.pdfIn PDF document text
- https://s3.amazonaws.com/kefodek/labutewitigesazebegema.pdfIn PDF document text
- https://s3.amazonaws.com/juvetaso/ssc_part_1_result_2019_marksheet.pdfIn PDF document text
- https://s3.amazonaws.com/rolefosiju/animal_coloring_pages_for_adults.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ca8c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCA8C	5372 bytes
SHA-256: `426d824351fdb4762c0ff1a9e8a4a8dd94b434cd0b17d11abfd1fb4eef5bb8f9`
`font_01_sfnt_off0000dced.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDCED	10320 bytes
SHA-256: `a3e67cb0b3135fb02ef737e91830c2281d9cc8b210ac5e3b39fb3eae91e0f214`
`font_02_sfnt_off0001004b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1004B	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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