PDF malware analysis — malicious · 7aa8331527d85abc

MALICIOUS

PDF

62.9 KB Created: 2020-12-20 18:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: a0d86111642ca6ff5c403f0b230c26e2 SHA-1: 6d8e7518a6d9d5f6557779e5085335af8dd75a90 SHA-256: 7aa8331527d85abc2b06c6700eefea77b9f610f7fbfa55c71fc21abc1479574e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to educational content, which is a common tactic for phishing campaigns.

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://traffnew.ru/strik?utm_term=alliteration+worksheet+grade+4+pdf PDF link annotation
- https://lizuvozirowamu.weebly.com/uploads/1/3/4/7/134719338/kamolonine_duximiripa_fajareveja.pdfIn PDF document text
- https://ralututoj.weebly.com/uploads/1/3/4/4/134457658/kifutimavofexagimof.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458417/normal_5fd89a2559f13.pdfIn PDF document text
- https://litepuvib.weebly.com/uploads/1/3/4/7/134741427/matipopatuki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453719/normal_5fd66205bfb76.pdfIn PDF document text
- https://takijotirodone.weebly.com/uploads/1/3/1/6/131637658/3b430bc3a172d79.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/a801a9c8-dde3-47e7-b72c-939c878a6f89/zikawafole.pdfIn PDF document text
- https://s3.amazonaws.com/ganubifirigevi/monthly_outgoings_spreadsheet_uk.pdfIn PDF document text
- https://s3.amazonaws.com/pizivurapab/2543764275.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/68a3d29c-be83-464a-b915-64cf8ff0ff46/moxedegefafu.pdfIn PDF document text
- https://s3.amazonaws.com/wozowuledij/annual_report_of_a_company_balance_sheet.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_off0000b977.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB977	5536 bytes
SHA-256: `d973db778fe276651742174621e809f0f5f4b9fb8b6179af9c32dd3175686d15`
`font_01_sfnt_off0000cc5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC5E	10284 bytes
SHA-256: `c3d6c8beae741f1cad78efd57c2574aa93bfb44c4a7615212185db968ae2021a`

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