PDF malware analysis — malicious · 9f7a0a5e136d5807

MALICIOUS

PDF

65.6 KB Created: 2020-11-13 02:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 3fc19a0be586b76df91ee5af4be1167a SHA-1: 2528619f1288a1e345aa8bd30cc0902c6e2f20b4 SHA-256: 9f7a0a5e136d580773821e0eb3e40fa4c7553fc4d817bd3ba88ae041b1506a6e

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-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://trafftec.ru/strik?utm_term=bridge+procedures+guide+2007+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4386361/normal_5f90d92c697c4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384045/normal_5f91210f4a7f1.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/vososasoxumete/frontier_mail_yahoo.pdfIn PDF document text
- https://s3.amazonaws.com/piradi/79334468855.pdfIn PDF document text
- https://s3.amazonaws.com/zesotat/work_practice_problems_worksheet_1.pdfIn PDF document text
- https://s3.amazonaws.com/rilexazejuzovep/bmw_m8_performance_specs.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/abuse_workbook.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/060094df-2e17-4cf4-98c5-5c2fd036ebb0/illinois_driver_s_license_restriction_codes.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/magazine_article_writing.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/757e3f49-17b2-47f8-a25d-2acd1a5db1d2/gunlance_build_monster_hunter_world.pdfIn PDF document text
- https://s3.amazonaws.com/lumixi/balkons_weapon_mod_wiki.pdfIn PDF document text
- https://s3.amazonaws.com/forupokisip/ziroxuxalanirewapulabove.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_off0000c328.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC328	5484 bytes
SHA-256: `8893517b4c7ce6e42c4a1fdf2c908035928000912e2659f5dd020d48627d2c18`
`font_01_sfnt_off0000d5ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5FF	10544 bytes
SHA-256: `3a8709f34762ce07f3a059ab6114dbdafb52e917684f53af0a0dd79665d76314`

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