Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c33b43058a41fff…

MALICIOUS

PDF

86.1 KB Created: 2021-05-18 00:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 58170d8c25cbb6fe06930987bb3d3da7 SHA-1: 6a603e3064f2cff636115680331f39b419f2caee SHA-256: 2c33b43058a41fffd57bc777108940ad321d6ffefc1bac0514acc57a78adaa4a
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, many of which point to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains text related to 'Kenmore elite washer error codes oe', which is likely a lure to attract users searching for technical support. The presence of PDF_SEO_LINK_FARM and PDF_URI heuristics, along with ClamAV detection as Pdf.Phishing.Trojan, strongly indicates a malicious intent to redirect users to potentially harmful sites.

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=kenmore+elite+washer+error+codes+oe PDF link annotation
    • https://takojozosuliwo.weebly.com/uploads/1/3/0/7/130739597/notef.pdfIn PDF document text
    • https://reribowin.weebly.com/uploads/1/3/4/6/134643330/4ec87ac3.pdfIn PDF document text
    • https://nironaguvotu.weebly.com/uploads/1/3/4/5/134530025/5821827.pdfIn PDF document text
    • https://wopedibim.weebly.com/uploads/1/3/4/5/134585971/6972757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450517/normal_6009f10077914.pdfIn PDF document text
    • https://foduzivanikatik.weebly.com/uploads/1/3/4/4/134492938/1288e6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_602ada285d98d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_6035d0825dced.pdfIn PDF document text
    • https://dozadekexojigig.weebly.com/uploads/1/3/4/0/134096874/3949925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467979/normal_603bbc7a85d3e.pdfIn PDF document text
    • https://burodinijosago.weebly.com/uploads/1/3/0/8/130813714/5906933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477401/normal_601dd7ef50722.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vebisop/vuzepokovolafopum.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/residential_lease_form_nyc.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/6266672568.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/chak_de_india_title_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/babaxuponuvezasisar.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/67489534992.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/assignee_vs_reporter_jira.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/12403929014.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/financial_report_template_excel_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/xuderufure.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_off00011193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11193 5240 bytes
SHA-256: bdcb292197c760f13b9cc45b36e5a637dc80f0f4c31c7e08cc607eb9d12a03f7
font_01_sfnt_off00012349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12349 11704 bytes
SHA-256: f401c413cbebdbed434cdf0ffef5626bd642a369144159244135a30b2bc2a23c

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