Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb322d8fc073c18…

MALICIOUS

PDF

79.2 KB Created: 2021-02-23 08:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7ba6ac4e28cb7ea3673cc7319bdc2415 SHA-1: 4733e972251ac2afd7b7287278700fd187c190e7 SHA-256: ffb322d8fc073c183b7d9abf05642615b7dbd4b72d40bcc826566a1967ad886d
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 acting as a link farm, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

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://bologen.ru/strik?utm_term=2018+maserati+granturismo+convertible+price PDF link annotation
    • http://medefoduma.iblogger.org/aptoide_pc_ita.pdfIn PDF document text
    • http://pasasem.iblogger.org/kedoxamozatetag.pdfIn PDF document text
    • https://cdn.sqhk.co/bojowagawire/iajb6Mz/super_mario_world_map_editor.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/ggfhdif/82713595726.pdfIn PDF document text
    • https://cdn.sqhk.co/fewukise/bZgegg1/74719055406.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/jitjf2e/16426647078.pdfIn PDF document text
    • http://kosixanadiguf.iblogger.org/makunetijolojopolovo.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/zYhciie/jomenus.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/cLVcZhi/pick_a_mechanical_pencil_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/novoganug/blr5C63/1831567013.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/jj0xhgd/53754967388.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/bgeOvtg/novo_cinema_festival_city_qatar.pdfIn PDF document text
    • http://gamiwajete.22web.org/explain_what_is_meant_by_knowledge_economy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xewewiwuxadul.rf.gd/tazorexewiwavi.pdfIn PDF document text
    • http://girodoge.epizy.com/honda_generator_parts_eu2000i.pdfIn PDF document text
    • http://jexititojule.rf.gd/83816683405.pdfIn PDF document text
    • http://vaxabusegaw.epizy.com/can_you_put_all_clad_pots_in_the_dishwasher.pdfIn PDF document text
    • http://nisarinu.epizy.com/binujubuvuvuraget.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_off0000f593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF593 5876 bytes
SHA-256: f9fe114c27dc5e4e386d105358aef3df97d252478021575bcc71ea6bd36be7fc
font_01_sfnt_off00010986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10986 11104 bytes
SHA-256: d417427c2afe3454124510453e033f8efa5d3f3380af6840b572ced1878f0512

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