Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5754d5c77a023b…

MALICIOUS

PDF

75.3 KB Created: 2021-03-02 03:33:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: c0061eb8511ca5ee870a3d36a1963601 SHA-1: 3e6a19269d9f145ff5cc8ddacf93d184804252fb SHA-256: 6a5754d5c77a023b9f61e55174322e56f2c0c442b72d41654bb53de5eb332871
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution attempt. The PDF contains a large number of external links, suggesting it functions as a link farm for SEO manipulation or to direct users to malicious sites. One of the embedded URLs, 'https://xezojetit.ru/award?keyword=tc+helicon+mic+mechanic', is particularly suspicious and likely leads to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/award?keyword=tc+helicon+mic+mechanic PDF link annotation
    • https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/f0db18.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/ifoeGVG/71467133581.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/hfqhcif/wartide_game_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mareduviger/ceKcqtd/pejixofuvarijebukasoj.pdfIn PDF document text
    • https://dutudofedibajun.weebly.com/uploads/1/3/2/8/132815365/970b7702756aa0a.pdfIn PDF document text
    • https://rozomibevepozif.weebly.com/uploads/1/3/0/7/130775668/1245070.pdfIn PDF document text
    • https://kamutimasevukov.weebly.com/uploads/1/3/1/8/131856564/fc2c4ac903aab6f.pdfIn PDF document text
    • https://cdn.sqhk.co/fomanazoravu/Ijbjifx/16067365557.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/jenagubadopi/49364916304.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/livros_de_candombl_gratis.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/games_to_play_with_4th_graders_on_zoom.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/tokio_marine_car_accident_reporting_centre.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/kexuxobizipog.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/minecraft_skins_mit_cape.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/farejup.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/wedding_budget_calculator_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/dogunidijiwurovul.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/engagement_ceremony_program_template.pdfIn PDF document text
    • http://kuxemozoxabonag.onlinewebshop.net/nuverogaxenodevova.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/doubling_numbers_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/segelarevitego.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/26133216925.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_off0000eb8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8F 4712 bytes
SHA-256: ea3bf5386f2133e671f1691a22081728d2d60c46f24d88b55d5c587691749e4b
font_01_sfnt_off0000fb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6E 10720 bytes
SHA-256: b07602f28fcfd5d0a4f77bc54951ef563361abdd699ed9c788232112a3925ca7

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