Malicious PDF — malware analysis report

Static analysis result for SHA-256 704ded38d03e05a9…

MALICIOUS

PDF

74.0 KB Created: 2021-02-10 00:29:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0bd700b7d7507f40e09e9eaee2f5dd47 SHA-1: 9002872e7e9b4f4cbb3220778f79a8f72f750f4c SHA-256: 704ded38d03e05a98ad26ae0c749b20dcc76c01116c76d39d1ad7c7e1e2713f6
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous embedded links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content or downloads. The presence of 'utm_term' parameters in some URLs indicates tracking, often used in phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/aws?utm_term=litres+and+millilitres+worksheet+grade+3 PDF link annotation
    • http://best-store.club/79028679439t69c7.pdfIn PDF document text
    • http://8bitbeardsco.com/hedwig_s_theme_viola_sheet_music_free0qu3p.pdfIn PDF document text
    • http://private-channel.site/zezofaw5cje3.pdfIn PDF document text
    • http://sfhgfje5df.xyz/741658890692h2l2.pdfIn PDF document text
    • http://nizozipup.22web.org/95949221579.pdfIn PDF document text
    • http://natbeach.space/chess_game_download_for_windows_8_offlinelh4rv.pdfIn PDF document text
    • https://cdn.sqhk.co/tumitibira/DhbThch/jurassic_world_survival_download_in_tamil.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/ibbcicC/90_s_hits_radio_station.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/fokaliwaxixariiuvav.pdfIn PDF document text
    • http://naturfresh.fun/61085665559drs5h.pdfIn PDF document text
    • http://front-glass.website/fularunewomefuketamifebifs6dua.pdfIn PDF document text
    • http://trickyturkey.com/suppress_definition_antonymbp3sd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zusupulek.rf.gd/32136045435.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/cartoon_boy_pic.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/base64_string_file_format.pdfIn PDF document text
    • http://wexugemo.epizy.com/58633698372.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/42612223288.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_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 5500 bytes
SHA-256: 9aecf320ba02a224dfcc607aef83bc8f0fb1e94d3af1a3b66d676d94373e147e
font_01_sfnt_off0000f592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF592 10984 bytes
SHA-256: e0d471e4ce4ae264738863e6f166cbef65098e5ac8a1493554150b388b9062d3

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