PDF malware analysis — malicious · 4251cd12ca6b7e49

MALICIOUS

PDF

67.0 KB Created: 2020-11-18 04:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 57926e7b74692f19cfbec1f0b4fa09d4 SHA-1: db77bcc7cc2cf2cac7bd210501bb3063cc3e0cfc SHA-256: 4251cd12ca6b7e49ae4114274996ceb9731861f717a0587ae2e898e656f16e7f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/strik?utm_term=berlitz+english+premier+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4379859/normal_5f9e264935ae8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390381/normal_5f926f3901122.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/tonisefoteka/guide_to_crossing_the_desert_bdo.pdfIn PDF document text
- https://s3.amazonaws.com/sizadagazagaj/fuvokif.pdfIn PDF document text
- https://s3.amazonaws.com/lupebesu/old_town_high_school_fax.pdfIn PDF document text
- https://s3.amazonaws.com/zetituri/op_rewards_codes_june_2020.pdfIn PDF document text
- https://s3.amazonaws.com/giwurode/90035723703.pdfIn PDF document text
- https://s3.amazonaws.com/lejivugeleguwod/nubozolimeluwem.pdfIn PDF document text
- https://s3.amazonaws.com/nosepevozux/thing_thing_arena_5_hacked.pdfIn PDF document text
- https://s3.amazonaws.com/najubu/gusiwagipo.pdfIn PDF document text
- https://s3.amazonaws.com/nokiva/32652143356.pdfIn PDF document text
- https://s3.amazonaws.com/mibiwivanetuj/54045595648.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7da8e3c1-e28f-4571-9c58-dcdb35765aff/28561537126.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_off0000c719.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC719	5344 bytes
SHA-256: `1c41fce498c350c5f940d5470a51876828e6c7846e87ad521493f30a33bcc55c`
`font_01_sfnt_off0000d92d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD92D	10904 bytes
SHA-256: `037f04d98fd710f1ce1881e6c17c62cc820c8966b0987926fe1d0edf18fadebc`

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