Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9388a307019579…

MALICIOUS

PDF

67.2 KB Created: 2021-02-17 23:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2b5081d44a823dacf47457e0e2396bfd SHA-1: d9ea8a7df691f95724e5fd36d531bc86923a79d9 SHA-256: ca9388a30701957961054c3bfaa5f5dbd5679446951321cccd65c5d978628642
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://baarspo.ru/strik?utm_term=average+salary+for+public+relations+coordinator PDF link annotation
    • https://mudulavodeg.weebly.com/uploads/1/3/1/0/131070753/952936e2d4114.pdfIn PDF document text
    • https://xutezanepone.weebly.com/uploads/1/3/3/9/133999331/makeso_pepasole_fotifusowajix_kegerovu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417046/normal_5fc768cc85bb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443821/normal_60264cf7272fe.pdfIn PDF document text
    • https://kopopoxewa.weebly.com/uploads/1/3/4/5/134597570/6963260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482849/normal_5fcd5f7672382.pdfIn PDF document text
    • https://gadikidaju.weebly.com/uploads/1/3/1/3/131379663/9a016f2a1f0.pdfIn PDF document text
    • https://datotizit.weebly.com/uploads/1/3/4/6/134696706/paxogugotugegi.pdfIn PDF document text
    • http://ziwixan.iblogger.org/xovigerumukezogu.pdfIn PDF document text
    • https://gomepenet.weebly.com/uploads/1/3/0/8/130874128/batutolokusedesumel.pdfIn PDF document text
    • https://forelidik.weebly.com/uploads/1/3/0/7/130775511/1964510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416326/normal_5ff7f1f042033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408343/normal_5fd2c88dd63b9.pdfIn PDF document text
    • https://mizevazorabij.weebly.com/uploads/1/3/5/3/135347525/funurozi.pdfIn PDF document text
    • https://muzuxagofonokow.weebly.com/uploads/1/3/1/4/131406885/2351244.pdfIn PDF document text
    • https://mizevazorabij.weebly.com/uploads/1/3/5/3/135347525/zogopoxivevakar-julor-xafogonunul.pdfIn PDF document text
    • https://bumokodujexub.weebly.com/uploads/1/3/4/5/134595190/9dfc6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxixezatazifax.epizy.com/dekulakekiwa.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.

FilenameKindSourceSize
font_00_sfnt_off0000c798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC798 5616 bytes
SHA-256: fbef2813fde0c23f85b8db71e44ef693a9dcdc8fcf612155b6bb8d9fe7e23c17
font_01_sfnt_off0000dad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD1 10832 bytes
SHA-256: 4184815b5ab64e45c9e62cff82ad24fc4fc5811667c5df6322f707b8a6d920d9

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