Malicious PDF — malware analysis report

Static analysis result for SHA-256 411836643b73df4d…

MALICIOUS

PDF

78.1 KB Created: 2021-04-18 13:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f4db6735795965745a8d71cd04a90e82 SHA-1: 09f0db6a8a1d4b0722b1bce07b81e64ef8b9dfe3 SHA-256: 411836643b73df4dbaefbf6170919e691bc2370eaf60ce74b15fdbc3ba7b199b
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with several pointing to potentially malicious domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to harmful 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 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://jumiwimov.ru/strik?utm_term=is+radicalism+good PDF link annotation
    • http://pizidojokinesa.66ghz.com/chrome_app_tv.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/92088718518.pdfIn PDF document text
    • https://zavowije.weebly.com/uploads/1/3/2/6/132680855/266111.pdfIn PDF document text
    • http://fonudesuwobulud.mygamesonline.org/bazabazofunu.pdfIn PDF document text
    • https://jizotigop.weebly.com/uploads/1/3/0/8/130874082/9267048.pdfIn PDF document text
    • https://giximanuv.weebly.com/uploads/1/3/4/5/134526051/vafuwibavutaxevutu.pdfIn PDF document text
    • http://totipuzuforaz.mywebcommunity.org/cartesian_plane_worksheet.pdfIn PDF document text
    • http://vodabutopidaru.getenjoyment.net/can_you_add_a_subwoofer_to_bose_companion_2.pdfIn PDF document text
    • http://tasefuvakol.22web.org/benasapaxodogo.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/mefadedosuw/kinematics_worksheet_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/hp_laptop_charger_connection_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/how_to_open_top_of_maytag_centennial_dryer.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/kupokevav.pdfIn PDF document text
    • http://wowupopokidejol.rf.gd/jj_cohen_monster_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/tiretog.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/kenmore_elite_microwave_convection_oven_not_working.pdfIn PDF document text
    • http://supajiwa.myartsonline.com/troy_bilt_tb130_lawn_mower_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/buyer_s_guide_apple_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/70606836634.pdfIn PDF document text
    • http://forilojemani.epizy.com/58902245690.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_off0000ee58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE58 5196 bytes
SHA-256: 7b7d2fd7cc9e22b3e2c0afeec20e8fbbb7062c8d757b3891956b14692b4cfa0d
font_01_sfnt_off0000ffee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFEE 12720 bytes
SHA-256: 6999fbf47eea882311e21c469d4e02178629bfaee5086d282c018aab87320c2a

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