PDF malware analysis — malicious · 55a7387644ed533e

MALICIOUS

PDF

74.5 KB Created: 2021-02-22 13:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: bb60f48f9d4c6288f29b2c7813c1516e SHA-1: f1387d7562c9b15bce2191e9ff4dd1244a23da76 SHA-256: 55a7387644ed533ec6fb7f58f8e17d2138474762af90f6e29d6cfce7fa49d599

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'marketing digital cursos'.

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://bologen.ru/aws?utm_term=marketing+digital+cursos PDF link annotation
- https://cdn.sqhk.co/figakeves/ghbBcgh/drift_trike_warszawa.pdfIn PDF document text
- http://wutoxurusot.iblogger.org/aadhar_card_form_online_print.pdfIn PDF document text
- https://cdn.sqhk.co/dokukavifig/jbii4RP/15188672958.pdfIn PDF document text
- http://faguduni.22web.org/51583864868.pdfIn PDF document text
- https://cdn.sqhk.co/zogowefu/hfBjaNW/red_balloon_chicago.pdfIn PDF document text
- http://rinomisogopap.iblogger.org/gofataxip.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/jesidofefe/bob_evans_christmas_dinner_menu_2020.pdfIn PDF document text
- https://s3.amazonaws.com/regegozumekoza/sample_case_study_interview_questions_answers.pdfIn PDF document text
- http://wesokukukidi.epizy.com/tamilrockers_2012_tamil_movies_hd.pdfIn PDF document text
- https://s3.amazonaws.com/bejeseja/play_bubble_shooter_online_free_no.pdfIn PDF document text
- http://zefuxaninegug.epizy.com/42467193222.pdfIn PDF document text
- https://s3.amazonaws.com/kisimujuk/occupational_therapy_in_autism.pdfIn PDF document text
- https://s3.amazonaws.com/sesafefanulokam/ascites_pathophysiology.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_off0000e8c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8C9	5176 bytes
SHA-256: `7531bec23319999d367d65b3d4a69b40443af67323bdce6399fc43f156d26524`
`font_01_sfnt_off0000fa84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA84	10168 bytes
SHA-256: `8efaea806b44014b139497d79531017e5b81b5b58f3aabc91a224fd678317c1b`

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