Malicious PDF — malware analysis report

Static analysis result for SHA-256 819976929094078b…

MALICIOUS

PDF

99.8 KB Created: 2021-02-26 04:23:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: acb73a1e77052c2366c133a5e2ed1af6 SHA-1: 0f6fcd3a2ce8d9fafc454fb3fd2a24db229f1cc1 SHA-256: 819976929094078be7a1bd451456d4c646c12c148d63845f9ac78873914d6837
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF SEO link farm. One of the primary external links points to a URL that appears to be part of a malicious campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jottigo.ru/strik?utm_term=panotour+pro+2.5+portable PDF link annotation
    • http://vuxuvex.iblogger.org/physics_conservation_of_momentum_worksheet_answers.pdfIn PDF document text
    • http://pop-marketplace.ru/adam_smith_absolute_advantage_theoryiicxo.pdfIn PDF document text
    • http://josuwuwopow.22web.org/hemophilia_guidelines_2013.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/mepanegotoduxijasedu.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/gidqMu7/napowaxadi.pdfIn PDF document text
    • http://vujivozopix.iblogger.org/am_i_average_looking_or_pretty.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
    • http://tokavasetalan.epizy.com/how_to_connect_surround_sound_to_tv_without_hdmi.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/64485950868.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/mezizagozajezidu.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/xadadovop.pdfIn PDF document text
    • http://sexikiti.epizy.com/lunilasaxu.pdfIn PDF document text
    • http://rawuwad.epizy.com/jaxeraxani.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/netgear_cg3000d_wifi_not_working.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F83 14176 bytes
SHA-256: cd2bcc606e235701b75cba87357d07d1739f247669c17ccbef77222785ed4199
font_01_sfnt_off00013b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B30 4900 bytes
SHA-256: 61936745a220889404ab1efe29a7aa043ea671a5f66bea72ebc64fc1e728f731
font_02_sfnt_off00014be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BE3 11380 bytes
SHA-256: 0885988e8997da838a2fbab43a4c80861a2620375c161e3f08d302cf8f6e9cdd
font_03_sfnt_off000171ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171ED 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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