Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06b9f9a1af45bf4…

MALICIOUS

PDF

89.0 KB Created: 2021-03-19 04:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bf906e8bf5870d073ab43b224996e8f6 SHA-1: 83efbd475e4e9c0a855806232b6bbf8d0a899793 SHA-256: d06b9f9a1af45bf44a6443ece50201008786ae2c1117dd4dbe94ef65cb25f151
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

Heuristics 5

  • 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 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://crophysi.ru/aws?utm_term=armstrong+furnace+specs PDF link annotation
    • http://azakalaza5.xyz/first_flight_class_10_question_answerwpdqz.pdfIn PDF document text
    • http://ideaita.fun/microsoft_office_excel_2013_free_download_for_windows_7oik4s.pdfIn PDF document text
    • http://matteset-spon.space/amstel_ultra_informacion_nutricionalgt79d.pdfIn PDF document text
    • https://namosupegu.weebly.com/uploads/1/3/4/3/134313644/b48328.pdfIn PDF document text
    • https://pazibeze.weebly.com/uploads/1/3/1/6/131636707/4728313.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417808/normal_5ff0df144f84f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452148/normal_5ffac5cc47923.pdfIn PDF document text
    • https://gixakipero.weebly.com/uploads/1/3/1/4/131412713/jopogosut_bibiwirimupubu_vemoke_miwibabamatolu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457272/normal_60055e478c1ce.pdfIn PDF document text
    • http://mscredit.info/59601791874l19n9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463287/normal_5fd85bad3fecf.pdfIn PDF document text
    • https://jefibapo.weebly.com/uploads/1/3/2/7/132712451/jedili.pdfIn PDF document text
    • http://idealica-co.site/is_starbucks_skinny_vanilla_latte_sugar_freepinjn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374696/normal_5ffed2a3f08fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409616/normal_6041ff0329e47.pdfIn PDF document text
    • http://brightshopbg.xyz/biblical_hermeneutics_an_adventist_approachs77pa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465393/normal_603a2590537da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383444/normal_5ff51d6e87007.pdfIn PDF document text
    • http://rewita.fun/sulilovidkn414.pdfIn PDF document text
    • https://razixolinatu.weebly.com/uploads/1/3/4/3/134384461/8000054.pdfIn PDF document text
    • http://claire-irk.ru/ohmeda_biliblanket_meter_ii_service_manualz1r7m.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/14eb2861-5908-4552-b442-e852b82e127c/best_way_to_listen_to_music_while_snowboarding.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/946e99f4-6dcf-4164-8a54-a11dbbd906f0/a_lesson_before_dying_chapter_5_and_6_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cbe5941-86b3-49cc-9650-8fcf019a8e3e/tipos_de_sistemas_operacionais_para_servidores.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_off00011cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF4 5292 bytes
SHA-256: be2fc3b8cf37e5d9852d8c06b0fc942190e638b07d4cc4c098d0c7f93cb7f5af
font_01_sfnt_off00012ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE4 11080 bytes
SHA-256: eaf1de555c54ae686ad50e99169801d4830917c369ddc6218dd2ca80398a8dbf

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