Malicious PDF — malware analysis report

Static analysis result for SHA-256 11334d406b46ec72…

MALICIOUS

PDF

98.9 KB Created: 2021-03-19 22:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 0be7b9b0a7d059467247ec2cd4326351 SHA-1: 234ff978e3ea85617e1b804276c630491c90307d SHA-256: 11334d406b46ec729cd6de93810717cb7d5ee6113b78767b317d45c1d06fe3f6
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many pointing to disposable domains, characteristic of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for SEO manipulation or to distribute further malware. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dugedepap.ru/wix?keyword=lanahan+readings+in+american+polity+6th+edition+pdf PDF link annotation
    • http://tiktokhd.design/85974773185y7se6.pdfIn PDF document text
    • https://fewidugokejif.weebly.com/uploads/1/3/4/8/134895907/cbc5a2715cd160.pdfIn PDF document text
    • https://retagavit.weebly.com/uploads/1/3/4/3/134363188/lilorawekemufejefab.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/hvjaiav/tesiximonupanape.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/e2ed913bde.pdfIn PDF document text
    • https://cdn.sqhk.co/worupageke/SjejhB1/drug_metabolism_reactions.pdfIn PDF document text
    • http://natbeach.space/vemazekasivibirosixa9nroe.pdfIn PDF document text
    • https://bavibexovapow.weebly.com/uploads/1/3/4/6/134643610/9429949.pdfIn PDF document text
    • http://redirunna.xyz/jilekawukojuzute85vu2.pdfIn PDF document text
    • http://originalhallyu.com/xaxesirotowabudvovqn.pdfIn PDF document text
    • https://tuxibefogeja.weebly.com/uploads/1/3/4/3/134359070/nubipigiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7178832a-5720-4888-be8b-a0b9e544d8b4/what_degree_should_i_get_for_project_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af109f2d-2abc-4332-ac69-46b10173a9dc/does_my_kenmore_dishwasher_have_a_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2baf86a2-b7ac-433d-9c12-1025471674de/98383454130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64bec330-c584-44cb-b8eb-f4ded5dd59fe/how_to_program_rca_rcr414bhe_4-device_universal_remote_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4273c8b6-e3b7-486c-ba7f-bc07f0b56f28/visual_basic.net_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2751fea-d8a1-4a7e-98cc-4f5a370fdda7/how_to_use_the_self_clean_on_my_wolf_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ef76986-f4c3-41d6-ae99-756877c69aa5/knight_of_the_seven_kingdoms_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd8f06c4-d37f-4ebf-baf6-ee1b28936a1f/18774799855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6cc5c23-1514-40c2-8e7a-dfc7025b78de/how_to_calculate_instantaneous_velocity.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AD3 5236 bytes
SHA-256: c1fc51574e9fb14f1fd79ee1720ec80714da8bace5ebb82447201e934f023543
font_01_sfnt_off00012ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA7 5764 bytes
SHA-256: 56e694eed21f85795f1a8fbca1ec912ca548152b1e84857696b94ded04b05d56
font_02_sfnt_off0001402e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1402E 11552 bytes
SHA-256: 9955843aa5713d53dd40c2ee5efc437ad4ab4e68ef1e694b7dce05afdb11e4e3
font_03_sfnt_off000167bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167BB 16256 bytes
SHA-256: aceeec06edcbf9ac56de0ee70f984f900f349bf42fadc139c35cb0eb49e1ec07

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