Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b48d9dc94129070…

MALICIOUS

PDF

75.0 KB Created: 2021-05-27 07:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 029b412138141d5a43c288a9c66cfaef SHA-1: d264ce2efcfd7efb557cdb9b84f51147e67958a9 SHA-256: 3b48d9dc94129070ec7f35d0b5d5475908adf04281fa4c9b877cd25394238df2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it contains malicious content. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains a large number of external links, likely intended to direct users to malicious websites or for SEO manipulation. While no scripts were extracted, the presence of numerous external URLs points to a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://dituwugo.weebly.com/uploads/1/3/4/2/134235792/e2c269f76907d0.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_6068d335dcd64.pdfIn PDF document text
    • https://jozevupipe.weebly.com/uploads/1/3/5/3/135346753/pukomikuloded-zawipasoda-vimaf-sunawa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444115/normal_5ff651e85a234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_600cde04d01ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454558/normal_6018e28f470dd.pdfIn PDF document text
    • https://pefoduzipim.weebly.com/uploads/1/3/4/3/134371740/f763b7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475219/normal_6030a9d3e4f90.pdfIn PDF document text
    • https://ferodamogeko.weebly.com/uploads/1/3/5/3/135330017/957f9e1583fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/n4t4wXRn-MA/wb?keyword=got%20this%20feeling%20in%20my%20body%20justin%20timberlakePDF link annotation
    • https://uploads.strikinglycdn.com/files/3d2b014d-6c43-4794-a68e-1dc6babd29f1/weseluwofosowafurobede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e82bb142-6a24-4ec6-aed8-209010d950d4/pilgrims_progress_animated_movie_2019_watch_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d092ee3f-8071-4bc0-b75f-d8e6f302d1ef/bavipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2251f36-c297-41ec-bb77-7c4997e23bea/80144292492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c1c9717-56f2-4c01-aab2-510be78ced9e/51086945087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a566e53e-9bc2-409f-9f09-6a2bac929149/vmware_datastore_best_practices_6.5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44acb3ac-6477-4893-aa14-b4509e21780f/zojivupuruseled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab42ffc-070c-4dfc-8de9-ebf65c7e6d65/43741255741.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_off0000e58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58C 5732 bytes
SHA-256: 6faf7b4efb27eaf508f42852136f909a0fa83e1fd9010d7be797675e05513f2e
font_01_sfnt_off0000f8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F5 10984 bytes
SHA-256: b6f2a31de8b16f32f2d189bf2acce160584de287de6b4bd034de851115d59a61

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