PDF malware analysis — malicious · 494395adc1263943

MALICIOUS

PDF

79.3 KB Created: 2021-03-08 00:49:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: fd25c3ff5478518d153db86513366ecc SHA-1: 24120bffc0908ff48b0983a695c4db749bbcf8fb SHA-256: 494395adc1263943f2271d26825d165c3791b737febc20b291e49a822e4171dc

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, suggests a lure related to a common search query, aligning with phishing tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://soxebez.ru/strik?utm_term=how+to+change+grease+in+kitchenaid+mixer PDF link annotation
- https://cdn-cms.f-static.net/uploads/4379385/normal_601317004f10c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369928/normal_603388cd8e529.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406787/normal_601597c20b48a.pdfIn PDF document text
- http://jesepupisiso.22web.org/94995826144.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4382948/normal_6008eed7d5a83.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447089/normal_5ffaa16012f0c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4402737/normal_5feb339ecc618.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393179/normal_5fe767f413e3a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/mipizaju/drawing_worksheets_for_middle_school.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1474ab45-2b42-4fac-ae50-be09d81f654e/what_is_the_meaning_apparatus_in_tamil_passion.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58f1e542-3c06-4b2a-867f-f1fd982d92bd/fovasukekidikagulu.pdfIn PDF document text
- http://vewomani.rf.gd/intergovernmental_panel_on_climate_change_report.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9b679069-33a9-47eb-b3b9-404395132661/dafatobalukujowenulaze.pdfIn PDF document text
- https://s3.amazonaws.com/wajufifenoxuj/gipulekexa.pdfIn PDF document text
- https://bc732cde-fb09-4fee-8ab5-c82a45a1131b.filesusr.com/ugd/2ac701_faf5a2ef856a4975bde3e9deab1f6a61.pdf?index=trueIn PDF document text
- https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_c80fdaa6831b4bddb34ce7a095ad121e.pdf?index=trueIn PDF document text
- http://nojuvuxu.rf.gd/uniden_dect_6.0_phone_turn_ringer_on.pdfIn PDF document text
- https://s3.amazonaws.com/masevewi/67541901463.pdfIn PDF document text
- https://s3.amazonaws.com/xalexojaxipud/balearia_ferry_formentera_denia.pdfIn PDF document text
- https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_0855c56c09b046eabc65070fddbd3c8a.pdf?index=trueIn PDF document text
- http://sunusegelu.rf.gd/lost_boy_piano_sheet_easy.pdfIn PDF document text
- https://s3.amazonaws.com/wujodibu/96475832224.pdfIn PDF document text
- https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_c9f57279f6e14916b5617fe590c7a039.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec72.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC72	5292 bytes
SHA-256: `db230a7e20d5fd95b6d6815c0802bc38e0fce6179614658061e0adf43b0e5b29`
`font_01_sfnt_off0000fe4c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE4C	10300 bytes
SHA-256: `536222950da2ef8124fc8994d9acdb81692509105472f1d27505888a3f4f117d`
`font_02_sfnt_off0001219b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1219B	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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