PDF malware analysis — malicious · 2fb6715c5b7baf14

MALICIOUS

PDF

67.0 KB Created: 2021-01-23 17:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: a686af5b79f8e330c290fa11afae5e14 SHA-1: 944b9e529d5483dfaa1c3102d282de0e44f33487 SHA-256: 2fb6715c5b7baf14f5d667b2db41b7e3135393dd9775d9858b07d39d2db381a1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=crocker+amazon+park+map', which is likely a phishing lure. The document body is heavily obfuscated, but the presence of the external URI and the ClamAV detection strongly suggest a phishing or credential harvesting attempt.

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/123?utm_term=crocker+amazon+park+map PDF link annotation
- https://cdn-cms.f-static.net/uploads/4412592/normal_600b028888127.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4415937/normal_5ff8a9a77b10f.pdfIn PDF document text
- https://cdn.sqhk.co/seranowe/chcgfJt/boduxefinog.pdfIn PDF document text
- https://site-1168034.mozfiles.com/files/1168034/famefugin.pdfIn PDF document text
- https://site-1178690.mozfiles.com/files/1178690/panda_jump_game_download.pdfIn PDF document text
- https://site-1177531.mozfiles.com/files/1177531/buzategodasodosof.pdfIn PDF document text
- https://site-1180426.mozfiles.com/files/1180426/puximu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466661/normal_5fdb8f3e2006e.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/kefiperizonofu/anemia_celulas_falciformes_cie_10.pdfIn PDF document text
- https://s3.amazonaws.com/zedudo/atlantic_county_clerk_cover_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/tezofuretejom/signos_y_sintomas_de_insuficiencia_cardiaca.pdfIn PDF document text
- https://s3.amazonaws.com/wunupalezozerud/nuwimilejufuki.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_off0000c867.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC867	4888 bytes
SHA-256: `df64b1489217536b1c3ec7a398e8459aab8084d17cc152a21273596996b009d6`
`font_01_sfnt_off0000d900.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD900	11212 bytes
SHA-256: `db7616fa7639191922f644af07d780a1b1ecd23c22c465e51b0510e259bf8519`

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