Malicious PDF — malware analysis report

Static analysis result for SHA-256 f132adfae4a2c044…

MALICIOUS

PDF

70.2 KB Created: 2021-02-18 04:04:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: caeaee45aca0219e139e2d4a70af2e72 SHA-1: 5a09f6114c8f491806979762de72397348d34332 SHA-256: f132adfae4a2c0441df32169fe7abad3af563dffad2499412403c59474b36581
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/aws?utm_term=the+making+of+the+west+peoples+and+cultures+volume+1 PDF link annotation
    • https://cdn.sqhk.co/sileluzorupo/gibhjjf/gumball_y_darwin_anime_en_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/biserodafed/eVhd4lW/ninja_blade_movie_2009.pdfIn PDF document text
    • https://cdn.sqhk.co/goworonol/89yqGAy/29178669124.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/icuAagi/53592822804.pdfIn PDF document text
    • http://interbankdigital.com/jowaxedaponxisno.pdfIn PDF document text
    • https://besajiti.weebly.com/uploads/1/3/1/8/131856076/9212726.pdfIn PDF document text
    • https://cdn.sqhk.co/leredupodeka/dohcADv/rad_e_bikes_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/J9hex4p/microgolfoven_combi_krefel.pdfIn PDF document text
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/8591834.pdfIn PDF document text
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/kevalosamonem_fetegovonufuxo_fokaweg_rosarebiriduli.pdfIn PDF document text
    • https://cdn.sqhk.co/musezikuzapi/6mcjijj/2020_nfl_football_schedule_week_1.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/bokexizometun/cavalier_king_charles_spaniel_dog_breed_information.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/coosa_valley_news_arrest_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/minority_report_tv_show_season_2.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD586 5784 bytes
SHA-256: ce4154b388433088742d8b6dad88beaf7b94e84fcdb0da1fd6f67e00c2ed324d
font_01_sfnt_off0000e92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92C 10148 bytes
SHA-256: b9e944e88c419fc6a34119174a73062f8d5998d25f2739bc0c2d023c6c04c91e

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