Malicious PDF — malware analysis report

Static analysis result for SHA-256 a415665308807679…

MALICIOUS

PDF

82.7 KB Created: 2021-03-04 10:59:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5d0e6c3294fd1fd1b47264a713622e65 SHA-1: 2489d11c1c66d12b9cb67802b4c210009102c8de SHA-256: a415665308807679e6e5d8c0fc76a3ebde1e38f8c56aef479c83f502306dcdfa
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://jacksth.ru/123?utm_term=what%2527s+the+coldest+it+gets+in+lakeland+florida PDF link annotation
    • https://zitejapaj.weebly.com/uploads/1/3/1/8/131872087/miropikevikujam.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/canadian_zip_code_format_regex.pdfIn PDF document text
    • https://tanofome.weebly.com/uploads/1/3/5/3/135316841/2759643.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/i1uhgF9/fagiwaxexugubatudavuxuj.pdfIn PDF document text
    • https://revasarubon.weebly.com/uploads/1/3/5/2/135295272/5638609.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/jifhbMo/73020802687.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/hjiagg7/god_kings_game_cheats.pdfIn PDF document text
    • http://lunesygets.xyz/944665920978ty0x.pdfIn PDF document text
    • http://sagedix.medianewsonline.com/9008685553.pdfIn PDF document text
    • http://nomevufaneboja.mypressonline.com/kefusuduton.pdfIn PDF document text
    • http://mevesepegubisis.scienceontheweb.net/you_are_the_universe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://saxodanokijaj.atwebpages.com/tevalusojikabubisuzalijel.pdfIn PDF document text
    • http://lelesajik.epizy.com/17964075087.pdfIn PDF document text
    • http://titarejidawe.epizy.com/worksheet_on_box_and_whisker_plot.pdfIn PDF document text
    • http://baverasoge.epizy.com/kimazudipejalo.pdfIn PDF document text
    • http://zijedan.atwebpages.com/6751808611.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_off00010534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10534 5392 bytes
SHA-256: 7a5c678d9347379a6b373720d1dc5d47e3e01b2011367aa447359309e2bbca33
font_01_sfnt_off0001179a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179A 11120 bytes
SHA-256: 66faa1e69468565fc219c91490e431b842b1ee21125a442a5151d1560b7fb473

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