Malicious PDF — malware analysis report

Static analysis result for SHA-256 2702f2fab8841c15…

MALICIOUS

PDF

79.8 KB Created: 2021-03-14 06:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 02e32f94e343f1ec6c67f98c5d4eac8a SHA-1: 0927226940503938c4ec66a23623764fec319791 SHA-256: 2702f2fab8841c151cee745cd099e1c248e66a8b93d5411f0ddf402f8db27bc4
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 0.9993

Heuristics 4

  • 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://mezovuduw.ru/strik?utm_term=willy+wonka+and+the+chocolate+factory+opening PDF link annotation
    • https://cdn.sqhk.co/xekejegixawo/vhjhejj/kimipuvamu.pdfIn PDF document text
    • http://lufusegon.22web.org/kifemuke.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/jfVFjju/51118112947.pdfIn PDF document text
    • https://cdn.sqhk.co/gerukoso/ghdgdrq/resaxesetalesewawo.pdfIn PDF document text
    • https://cdn.sqhk.co/rowibimibopi/ibs7FbA/rajoxazuraza.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/n3zgfqM/gofoboxiwugubu.pdfIn PDF document text
    • https://cdn.sqhk.co/gusorewiwal/hmhb3na/xujegasiluwufavotoxidat.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/acido_fosforico_formula_di_struttura.pdfIn PDF document text
    • http://fetokoporumof.22web.org/neuron_structure_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/2N15IJ1/tuxikew.pdfIn PDF document text
    • http://fafuzum.sportsontheweb.net/acute_cholecystitis_tokyo_guidelines.pdfIn PDF document text
    • http://wodaretibinusad.22web.org/67674575258.pdfIn PDF document text
    • http://zimejitudik.iblogger.org/kewigupajuzazajonivoridi.pdfIn PDF document text
    • https://cdn.sqhk.co/mogilirexexa/jehaEpU/luramifisukupawel.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/kigghl3/mekorama_vr_apk.pdfIn PDF document text
    • http://xovitixekewelom.scienceontheweb.net/believe_in_yourself_ebook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lijowavatajo.myartsonline.com/kakuxubevuzenoxevufi.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/50142814410.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/how_to_tune_a_cobra_29_nw_ltd_classic_cb_radio.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/lovetusalijafepiradixowux.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/beats_by_dre_wireless_headphones_studio_3.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/pexudanenusuj.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/44067223138.pdfIn PDF document text
    • http://tononuzaribiw.rf.gd/nukuxuzom.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_off0000f4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FB 5512 bytes
SHA-256: 21cf4c15a3c86a1924a2a78732d1bc8443af414e20c7700ce1af67065093e70e
font_01_sfnt_off000107db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DB 11736 bytes
SHA-256: 842cbbc3d3942656a5fe7bdd3c48c7fb4666483c825c54f3711bfe6f8185e4cf

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