Malicious PDF — malware analysis report

Static analysis result for SHA-256 061053f1829e4a0e…

MALICIOUS

PDF

81.6 KB Created: 2021-06-04 07:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7e11ee0db202deeefa5abccadc1db0f0 SHA-1: 523eb7a45d238d47bec64115bededee5a10c499c SHA-256: 061053f1829e4a0eb509d58da6e60e49cf4100062e7400fc58553a6d3d9dafdb
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classification and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external URLs, some of which are hosted on disposable domains, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the PDF's structure strongly indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/123?utm_term=able2extract+professional+free PDF link annotation
    • https://vomuzubedabop.weebly.com/uploads/1/3/0/9/130969103/misufegevumagaf_saxokew_berusonube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446917/normal_5fd18d6422d8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_603dfcc587316.pdfIn PDF document text
    • https://jotowaviroretog.weebly.com/uploads/1/3/4/6/134604658/e91059a5a8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426699/normal_60274b9878e5b.pdfIn PDF document text
    • https://vovamujif.weebly.com/uploads/1/3/5/3/135318660/29abc07e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5fd137b8233ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528915/normal_5fcc002c2aba3.pdfIn PDF document text
    • https://dupivujo.weebly.com/uploads/1/3/4/6/134612497/1ee3bd.pdfIn PDF document text
    • https://jugusunoju.weebly.com/uploads/1/3/4/6/134625161/6973244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_606a549793108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447640/normal_603533bb0799c.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/be2c63a1-013a-4a17-bd1c-77f283b6106d/wagomofapu.pdfIn PDF document text
    • http://bupataved.pbworks.com/f/69536127791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3125c890-751d-4194-89e2-c7a3268be3e2/love_story_nagpuri_song_2020_download.pdfIn PDF document text
    • http://sirazumebow.pbworks.com/f/how_to_host_a_biggest_loser_competition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c6a508-ab34-4f5e-841a-714b16e98c4d/zalebutugujezazijorere.pdfIn PDF document text
    • http://jobojifitin.pbworks.com/f/bupujegami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b5a3084-210a-4446-97a0-0b072d51c01a/canciones_cristianas_con_acordes_para_guitarra.pdfIn PDF document text
    • http://nolumemonip.pbworks.com/f/zajepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a5a9b73-b453-40fc-856b-9f6e98872c50/mercedes_benz_c_class_user_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC4 5340 bytes
SHA-256: 774435c12d04c6cd0f0d7cb75f2f8cedab327e50c457d7b28c5c910aa81e843d
font_01_sfnt_off0000fffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFE 10436 bytes
SHA-256: ea796605debadb268ce2edde165b8e9cdebd7ddc5bb30f8ec02ddb5b06dca6c9
font_02_sfnt_off00012404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12404 16128 bytes
SHA-256: 5a40ddc5e51f16bcc9dee63027ae19b082ab2532a7994c14688b8ac45e2a4fa0