Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a5050f2dd1bb7e…

MALICIOUS

PDF

75.8 KB Created: 2021-05-18 01:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0a7c4815206e46b0f730479478273e0b SHA-1: c155da93c4613d8e918bb6be86751c621838746c SHA-256: 15a5050f2dd1bb7e585ed47e977b2cc0b69e197be81137d5c4a11767944f3ffa
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 0.9997

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 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://pelibifir.ru/strik?utm_term=how+to+reject+a+job+counter+offer PDF link annotation
    • https://xagegebalelil.weebly.com/uploads/1/3/4/5/134579129/757a632768f.pdfIn PDF document text
    • https://gusemotasejodab.weebly.com/uploads/1/3/2/7/132741535/bipivusinupebawege.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/2586860.pdfIn PDF document text
    • http://jotaxanalesuti.iblogger.org/the_chronicles_of_narnia_prince_caspian_full_movie_online_putlockers.pdfIn PDF document text
    • https://sawinabepetejex.weebly.com/uploads/1/3/4/7/134714359/visafewize-risezojinalu-javip.pdfIn PDF document text
    • https://lokesikaneweb.weebly.com/uploads/1/3/1/4/131437695/rofedoxexo.pdfIn PDF document text
    • http://widevuvi.22web.org/brimful_of_asha_song.pdfIn PDF document text
    • https://bafewalu.weebly.com/uploads/1/3/5/3/135350628/905ec.pdfIn PDF document text
    • https://puxofigu.weebly.com/uploads/1/3/5/3/135347112/1065395.pdfIn PDF document text
    • https://rukuzidin.weebly.com/uploads/1/3/4/5/134517246/1605963.pdfIn PDF document text
    • https://divopugizupuja.weebly.com/uploads/1/3/4/4/134487222/tudinajijibezeromex.pdfIn PDF document text
    • https://telisawe.weebly.com/uploads/1/3/4/4/134466193/4468382.pdfIn PDF document text
    • https://likixadukevagal.weebly.com/uploads/1/3/4/7/134700169/ce8204c828f.pdfIn PDF document text
    • https://viluxesoxumubi.weebly.com/uploads/1/3/1/4/131406714/forawita.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/jarirotexab/27093799796.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/godinuf.pdfIn PDF document text
    • http://xokesuluz.epizy.com/samsung_tv_cast_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/adobe_reader_9._1_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/258074649.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/how_to_describe_forrest_gump.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/deadpool_2_tamil_dubbed_movie_moviesda.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_off0000ecd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD3 4932 bytes
SHA-256: d9d07fd4a1dde2181ee048019878eb4e30e6bd91f99820254301ee148fa21884
font_01_sfnt_off0000fdbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBE 10592 bytes
SHA-256: bf165469ff46493a96418ef962e76b7d98678bb94d27b20ed05999192da98ebb

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