PDF malware analysis — malicious · 156f12dd9e0731e9

MALICIOUS

PDF

80.6 KB Created: 2021-03-27 22:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: 557dea4b0cabedf45e3496b5c54ccd71 SHA-1: 4fe3343a0859e7964ad09fa90182813067cf1fad SHA-256: 156f12dd9e0731e93ae21ed97143961382d091c29239a60033cafd0fc81a2e48

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary malicious URL identified is fokemale.ru, which is likely used to host a phishing page or distribute further malware. No scripts were extracted, but the PDF structure and link farm indicate a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://fokemale.ru/strik?utm_term=nikon+fg+20+camera+review PDF link annotation
- https://vifexaxelis.weebly.com/uploads/1/3/4/4/134482988/d4f2b4.pdfIn PDF document text
- https://loniforuwo.weebly.com/uploads/1/3/4/9/134904684/lilem_zebulug.pdfIn PDF document text
- http://bewujasixi.mywebcommunity.org/16102340656.pdfIn PDF document text
- https://gilepinewuje.weebly.com/uploads/1/3/4/0/134096317/8349990.pdfIn PDF document text
- https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/3d504.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://uploads.strikinglycdn.com/files/11170bfe-7b75-46fb-b47e-ce18df2dd6ec/a_christmas_carol_musical_synopsis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/192ca9e6-26d8-479e-bc4f-b66a9a4988cf/5964403851.pdfIn PDF document text
- http://namepafubi.atwebpages.com/46371307828.pdfIn PDF document text
- https://s3.amazonaws.com/xapidajovaji/christopher_paolini_inheritance_free.pdfIn PDF document text
- https://s3.amazonaws.com/somisilegex/nobodewekezeritubupu.pdfIn PDF document text
- https://s3.amazonaws.com/bizamesuwepe/college_student_budget_spreadsheet_excel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/76ad10b0-533f-4028-9fab-ad4589db0af2/investigar_los_tipos_de_medios_de_comunicacin_que_existen.pdfIn PDF document text
- http://zedebegeku.myartsonline.com/ejercicios_de_enlaces_ionicos_y_covalentes_resueltos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e3ce7753-7995-4dd5-a2d9-b60f3c27dbb5/74566531389.pdfIn PDF document text
- https://s3.amazonaws.com/xakusineba/simpson_pressure_washer_3200_psi.pdfIn PDF document text
- https://s3.amazonaws.com/lomiwexuva/rezalejevu.pdfIn PDF document text
- https://s3.amazonaws.com/bamepofewalada/zazinazirefowagud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8ea371be-b4ea-4c9d-a44a-0906fc57364a/xulijumaraselebekagej.pdfIn PDF document text
- https://s3.amazonaws.com/xelimewat/bevame.pdfIn PDF document text
- https://s3.amazonaws.com/timituvupame/curtain_wall_systems.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9c96ff2d-3566-4e23-990e-bb61f88d3300/taxorozezitin.pdfIn PDF document text
- https://s3.amazonaws.com/jixeremipet/tokaladabedof.pdfIn PDF document text
- http://pevogikuxupeja.onlinewebshop.net/mlscn_act_2020.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/780bb27d-e9c3-4225-b02b-f38473a910b5/venofusisulezunowosodimag.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/756c6a00-21b7-41ac-94ee-3fbad9fa6343/duwodememumuxubu.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000efcb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEFCB	5160 bytes
SHA-256: `50199777efaf5387fedd142e8b46b3fa743d523ce94b3db439b40a3bccdaf70c`
`font_01_sfnt_off00010144.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10144	11004 bytes
SHA-256: `67e961f0b82b56527041a9c4160cddec782ad91861b590085bc6c0dae689bbf2`
`font_02_sfnt_off000126a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126A9	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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