Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62726fe9e8df2e1…

MALICIOUS

PDF

74.9 KB Created: 2021-05-11 11:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 996c7df7672ddca19737709432e9f2a1 SHA-1: c1ad2b1563a0538b8a4b73316762f48631c83a9b SHA-256: d62726fe9e8df2e19579f6be39dae965076abe2d3ab6fa50e0f2accb346cde13
156 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 0.9994

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 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://leonvi.ru/strik?utm_term=what+to+do+in+creative+writing PDF link annotation
    • http://sinomefonok.mywebcommunity.org/81738013472.pdfIn PDF document text
    • https://kekidebas.weebly.com/uploads/1/3/4/6/134633427/suluxa_suwila_pugava_xevenopikagava.pdfIn PDF document text
    • http://nakozek.mypressonline.com/active_and_passive_voice_worksheets_for_grade_6.pdfIn PDF document text
    • https://jaxefosizi.weebly.com/uploads/1/3/6/0/136083017/rufodesepikoxan.pdfIn PDF document text
    • https://tepidupelagoxu.weebly.com/uploads/1/3/4/4/134472529/vepurebibakemu.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/mendelian_genetics_worksheet.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/fedex_printing_near_me.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/ue_boom_2_speaker_price.pdfIn PDF document text
    • http://natosabi.mygamesonline.org/89298077399.pdfIn PDF document text
    • http://votapusi.mypressonline.com/mapa_geologico_de_colombia_2020.pdfIn PDF document text
    • http://lulizukudomiz.scienceontheweb.net/cesur_yeni_dnya_zet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://koradanizepagow.myartsonline.com/systematic_investment_plan_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/fulimulovaruji.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/gotuzuzujedok.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/chameleone_kipepeo_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/wedding_favors_sign_template.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/tasco_deer_camera_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/87990343022.pdfIn PDF document text
    • http://dijuvunote.onlinewebshop.net/6th_grade_adding_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/1367361670.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/asus_a555l_bios_update.pdfIn PDF document text
    • http://kegigija.atwebpages.com/kogiwaralivum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEE 4944 bytes
SHA-256: 10cbf17cb98b49c729ed3b6c8d368bbc2b4f5119feeb11c0da5da4c41eadf6d8
font_01_sfnt_off0000ebca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCA 10696 bytes
SHA-256: 652a319ef872a6b1e2637149c1c027482512ee7a14e1bf87da53d86073e992fe
font_02_sfnt_off00010fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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