PDF malware analysis — malicious · bc287de90059877c

MALICIOUS

PDF

79.9 KB Created: 2021-03-25 06:14:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 03dd828755f11323d8e3a68beb58c45b SHA-1: b1bfd50c18060b60cdfa2210157dcb9b6068c09c SHA-256: bc287de90059877c71f6ee49e18b2dbea18347d2a057e066fd8cc725f7655677

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a significant number of external links, many pointing to disposable domains and link farms, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs and the nature of the link farm suggest an attempt to direct users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://jottigo.ru/strik?utm_term=where+to+mail+your+941+without+payment PDF link annotation
- https://betivaronapan.weebly.com/uploads/1/3/5/3/135350750/7cc234c.pdfIn PDF document text
- http://migunovaj.iblogger.org/timisukilogo.pdfIn PDF document text
- http://gotiwekiz.iblogger.org/97976534109.pdfIn PDF document text
- https://mesikanuxiruk.weebly.com/uploads/1/3/1/6/131636832/luwonuba.pdfIn PDF document text
- https://lugifepitel.weebly.com/uploads/1/3/2/7/132710690/0cd096771490.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4367947/normal_5fefa5768dcb0.pdfIn PDF document text
- http://minuzin.22web.org/39218729282.pdfIn PDF document text
- http://erethiztzj.space/68830191020uo486.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371266/normal_5fd9d7a85fef6.pdfIn PDF document text
- https://tonikajolokoge.weebly.com/uploads/1/3/0/8/130874266/1280218.pdfIn PDF document text
- http://money-team.site/20598959336vezbi.pdfIn PDF document text
- https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/dotozavivuvoz_jetito_zunakoki.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/c6649bba-fd81-485a-907a-afe93a2f7b5d/43185102742.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7b27368-a6ff-457e-ae86-0749e59d45ce/nakutokusateladabe.pdfIn PDF document text
- http://majuditatip.rf.gd/nakojesuwevisimulekip.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6faa6f2a-6786-4b91-b15d-8b86a639732f/honda_2600_psi_pressure_washer_pump_replacement.pdfIn PDF document text
- http://lidufaz.epizy.com/92935869506.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b73f75b4-dd8a-4b1f-ac44-ec2c44667a35/rules_of_interpretation_of_contracts_in_india.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d7541af-5aaf-4f3f-b90b-38a5688e7a96/1116479977.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71b4603b-48dc-493a-997a-b75f37c05b34/fusimosoxikef.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_off0000eba9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBA9	5268 bytes
SHA-256: `09fd5f329682f4bfa677d2fe72a44f27ad731f9bc40c2394a8311517d5d46376`
`font_01_sfnt_off0000fd91.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFD91	10912 bytes
SHA-256: `aa4fdd848b4e985624a5bf652384f2ffe5faf204606486d7f932d1d8acd8771f`
`font_02_sfnt_off000122a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122A9	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

Open this report in the interactive analyzer, or submit your own file for analysis.