Malicious PDF — malware analysis report

Static analysis result for SHA-256 9642202dc667faf0…

MALICIOUS

PDF

80.8 KB Created: 2021-03-25 07:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 800438329ccd787d0f5a5c263d9a96d2 SHA-1: 49c572a6e924288b5af895bb3cb2920ec2fb8c02 SHA-256: 9642202dc667faf0b963e0db3cd47baa9639bd19dbe4e29ca2369d6fa9120ee0
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, as malicious. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, https://seumenha.ru/wix?keyword=mechanical+seal+handbook+pump+pdf, is likely used to direct users to malicious content. No scripts were extracted, but the PDF structure and numerous external links indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=mechanical+seal+handbook+pump+pdf
    • https://mixutuxo.weebly.com/uploads/1/3/4/6/134692071/4516182.pdf
    • http://particuliers-societegenerale.xyz/duximitugokikorafidaxizoc0vrx.pdf
    • https://cdn-cms.f-static.net/uploads/4471275/normal_5fe6e9d8d5b61.pdf
    • https://cdn.sqhk.co/sifajoxojif/g5ACiiW/tiny_armies_online.pdf
    • https://cdn.sqhk.co/jijubexovoz/iajcKhh/ethiopian_cargo_tracking_and_trace.pdf
    • http://pumba-timon.space/economic_census_survey_exam_questions_and_answersczthq.pdf
    • https://jifofavara.weebly.com/uploads/1/3/4/6/134631997/b44241d.pdf
    • https://cdn.sqhk.co/jurufovowufu/gekODgf/alienware_monitor_black_friday.pdf
    • https://cdn.sqhk.co/busoleva/WhiYHAY/xusizobe.pdf
    • https://mokonalu.weebly.com/uploads/1/3/0/7/130739423/6269453.pdf
    • http://idealslimitalia-ufficiale.site/gaxuxusoxuggnqv8.pdf
    • https://cdn.sqhk.co/puxitika/jjdYvjh/wosijobojufotepaxerujire.pdf
    • https://static.s123-cdn-static.com/uploads/4405644/normal_5fcda13760301.pdf
    • https://juviroxekeko.weebly.com/uploads/1/3/5/3/135399696/mabizilikazuzas_jaxelaxeju.pdf
    • http://redita.fun/microsoft_project_planner_free_download_2013un0y1.pdf
    • https://cdn-cms.f-static.net/uploads/4378623/normal_601dde2436fa6.pdf
    • https://cdn.sqhk.co/rofejusoturi/YOhdujc/46392024800.pdf
    • https://fodigedij.weebly.com/uploads/1/3/2/7/132740281/1f783d67496c.pdf
    • https://cdn.sqhk.co/kovutego/WtBifC0/12_week_beginner_half_marathon_training_guide.pdf
    • https://cdn.sqhk.co/fagijopi/egjiijb/dr_chessman_oviedo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_197c10fef6874c3d9175ebfed37b5574.pdf?index=true
    • https://ddf64d59-5240-4154-9987-17dfc28e22c7.filesusr.com/ugd/cec570_608baa6af276495e8466b077d9341113.pdf?index=true
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_b6f660d7263d41fa96aac3b32a98ba60.pdf?index=true
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_adc9a41981d94ddf835591abce81312e.pdf?index=true
    • https://e3e1c2aa-7f41-47b0-8c2f-d823cb48b857.filesusr.com/ugd/7598fa_565fc90b820b4d1ca0700762ea65a23b.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd05.bin
8fe448930c086703816ed8ee3b988f5a13158ea3447c3ab804b6f7a6c2a31b6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD05 5508 bytes
font_01_sfnt_off00010fa7.bin
2b66e5dfda692df6bbcb5f719542886f76e1bf7a05847e11395d3ec75e31e911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA7 11032 bytes

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