Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6c26b2ff160100…

MALICIOUS

PDF

100.7 KB Created: 2021-04-05 09:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 68a791292dc1015f6b541fa698ab2114 SHA-1: 2684252a44c44caf8f3d2a3aaee1bc8ec12e95de SHA-256: aa6c26b2ff160100cefa32358bc82fd6818ac51d2409ad79e91e859030095092
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

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 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://botokaw.ru/aws?utm_term=yahtzee+score+sheets+target PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446923/normal_5fec1c42e47ef.pdfIn PDF document text
    • http://romeoplanet.club/what_is_iso_9001_standards_australiail4ql.pdfIn PDF document text
    • http://electorat.org/temple_run_2_kaise_download_karna_haiurzyu.pdfIn PDF document text
    • http://kofupum.mygamesonline.org/20042692317.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449974/normal_5fcaaf4541a2d.pdfIn PDF document text
    • http://genoray.pro/annamayya_movie_mp4uf4ay.pdfIn PDF document text
    • http://duplicwcnj.space/espn_30_for_30_dennis_rodman_putlockersuf4qc.pdfIn PDF document text
    • http://podarokinsta.online/lutatumuzodudovatidupefozjm5s.pdfIn PDF document text
    • http://bidetoluji.getenjoyment.net/26526835295.pdfIn PDF document text
    • http://50offit.pro/acceder_a_icloud_via_androidolv9r.pdfIn PDF document text
    • http://tubujek.iblogger.org/bled_orthographe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446027/normal_6029f4d7d5a66.pdfIn PDF document text
    • http://magazok.top/the_beautiful_things_that_heaven_bears_sparknotesd1am2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jegowijuvu.epizy.com/respiracion_anaerobia_y_aerobia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf7133ff-649d-4ece-837e-36fe3fc6f68c/dollskill_black_lives_matter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60352ded-f613-4e50-9df4-13ab1956f04f/2003_dt466e_valve_adjustment.pdfIn PDF document text
    • http://pitaken.onlinewebshop.net/91422521599.pdfIn PDF document text
    • http://juzapurul.onlinewebshop.net/math_olympiad_problems_7th_grade.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_off00014ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FFA 5040 bytes
SHA-256: 774f75febf837e2a4f96e31862252fb231409efe4b888799e34c5dc2402fa487
font_01_sfnt_off00016126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16126 10740 bytes
SHA-256: 1a28418ceb748c6f1157872401c4ced2cdeb489614773fd4f283f015bf4b4781

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