Malicious PDF — malware analysis report

Static analysis result for SHA-256 1060a30e9d0e3dc3…

MALICIOUS

PDF

76.5 KB Created: 2021-03-10 11:08:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5c333e208386be6417cd1b3b98da5186 SHA-1: 9066da93177e462841a37118e937d93bf5449266 SHA-256: 1060a30e9d0e3dc312202250cb2368f7da2a18bbb485086cabfb5d4ad2e59e0e
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 0.9991

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://vilenefex.ru/strik?utm_term=project+manager+salary+in+atlanta PDF link annotation
    • http://pejalajumore.22web.org/wixidewifusetifixexok.pdfIn PDF document text
    • https://sojabejob.weebly.com/uploads/1/3/4/8/134890412/giwizobanalazit_gavoludared_debebab.pdfIn PDF document text
    • http://umniashka.ru/lutewiwerevonopelorerj9fi.pdfIn PDF document text
    • http://baby-slings.ru/read_louis_lamour_books_online_free9kufl.pdfIn PDF document text
    • https://namonivet.weebly.com/uploads/1/3/4/4/134493383/xixatiwife_vogeju.pdfIn PDF document text
    • https://gazekusiparisom.weebly.com/uploads/1/3/4/0/134012522/9de966af4a06bbd.pdfIn PDF document text
    • http://mynasert.online/486848909146emnj.pdfIn PDF document text
    • https://sotemupavunu.weebly.com/uploads/1/3/1/4/131413148/29235e.pdfIn PDF document text
    • https://finenomasawovep.weebly.com/uploads/1/3/1/4/131437785/jelik.pdfIn PDF document text
    • https://wutuzorul.weebly.com/uploads/1/3/5/9/135963099/78c2d073.pdfIn PDF document text
    • http://tells.fun/color_run_houston_march_2019kv2qh.pdfIn PDF document text
    • https://wegizitog.weebly.com/uploads/1/3/4/6/134685086/taveruvitagisig.pdfIn PDF document text
    • https://kererivodukeje.weebly.com/uploads/1/3/5/3/135303009/1783509.pdfIn PDF document text
    • https://wezawelo.weebly.com/uploads/1/3/0/8/130813956/5832321.pdfIn PDF document text
    • https://jigurojo.weebly.com/uploads/1/3/5/3/135321607/3342060.pdfIn PDF document text
    • http://beautysss.site/10795040521cn7ci.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wanalovum/concatenate_date_and_time_in_crystal_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/pesisutivagob.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/kasevidebotibimekegila.pdfIn PDF document text
    • http://gexefafuli.rf.gd/ramotoluxuvunesa.pdfIn PDF document text
    • https://c504e2ef-f928-4e80-b5b1-fc05046f432e.filesusr.com/ugd/247f25_7b26c16a7c374e5091e0a64603629fb5.pdf?index=trueIn PDF document text
    • https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_3870889052614e54b30dbc56d5906a10.pdf?index=trueIn PDF document text
    • http://molojagevatabu.rf.gd/11381095423.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/bhagam_bhag_songs_free.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_off0000f081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF081 5296 bytes
SHA-256: 36a72adeb5e8795dc80742cfb1d361b05dd114b15b9487a0dacb9d0c3ca469bf
font_01_sfnt_off00010279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10279 10008 bytes
SHA-256: 7bd1a3d2e557f1792b7b86c902e4f0220cf4e92256b2c220e3dd4047f470bcd1

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