Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebed054bb213ee6b…

MALICIOUS

PDF

77.9 KB Created: 2021-05-27 19:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 250fd176dd353189c8cbd8cfa187dd6e SHA-1: dd0b50a28815d3317869fcd67ed6cf936d3f11db SHA-256: ebed054bb213ee6b8f0837225c2bb720dbedc98239280aeebf1adb805364df75
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=after+we+collided+part+2+release+date PDF link annotation
    • https://zujemobeg.weebly.com/uploads/1/3/4/6/134653347/sojepovenir_bozak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486566/normal_600bb86b8ec40.pdfIn PDF document text
    • https://beponelife.weebly.com/uploads/1/3/1/1/131164358/03337bfbe2ba.pdfIn PDF document text
    • https://lukibufipijuzom.weebly.com/uploads/1/3/3/9/133997252/5365087.pdfIn PDF document text
    • https://kizegugiruliti.weebly.com/uploads/1/3/4/7/134729255/kitulukolenotas-luxubomo-jezovurimama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471481/normal_605519305ae3b.pdfIn PDF document text
    • https://mizefowoxeze.weebly.com/uploads/1/3/4/4/134485365/pogumikij.pdfIn PDF document text
    • https://bejuzozomixur.weebly.com/uploads/1/3/5/9/135966319/mumuxoxegotobe.pdfIn PDF document text
    • https://dejoputaxili.weebly.com/uploads/1/3/4/7/134763817/wukevolanexanab.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/be9f9180-1d08-49d3-b0d6-fc69364a0be1/sql_plus_software_free_download_for_oracle_11g.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fda3d0-53d9-40a1-b12c-ee02e246802c/makasekiwasenuwamesivivop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1805bb70-d3f9-48a3-bd55-262be30fd66b/maretu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d61a6ed-106d-4019-9002-db5e299de285/el_si_de_las_nias_resumen_por_acto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28bdb2fb-061a-4207-b1a7-d27c80930e51/zedepavakelewitidasotuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a54c08e-c196-48be-bf51-74979bf8aee3/what_is_the_best_glue_for_cast_aluminum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005ae51a-73c0-488f-8312-0d4663485ef5/9820101947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/621049b3-5012-40a1-9146-51063d2e330d/shiloh_by_phyllis_reynolds_naylor_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76649952-9b59-4feb-97e3-3f38ebb212f3/is_there_a_book_of_enoch_in_the_king_james_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a131ef-8442-4772-a1e7-a59c3b387c59/75485991761.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370213bf-1d8b-46bd-ad4d-e882bde90edb/girejuxolejudajuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59171fd6-0c00-44d4-ab99-3228fb7b584f/gorodebujulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82662f23-2956-44f3-82a2-08805a6df245/financial_statement_analysis_is_quizlet.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_off0000ee5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5B 5364 bytes
SHA-256: add101bc00dadbf5e8abeffa20eebc109d58420d215a72353e71e648e04b4229
font_01_sfnt_off000100bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 12444 bytes
SHA-256: d4320db0d40a6a917a0ac582230fbd8582714345bdf5f3d7d6231051f0e37a02