Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f3c57946c8b67e…

MALICIOUS

PDF

90.0 KB Created: 2021-02-27 11:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0869687c111ba9fe402ced758e032fde SHA-1: 3172b8e765731db4f1c919ad39eb0719e5533083 SHA-256: 02f3c57946c8b67e8fb238c00f8d3571528841d569255acbfe5f77ad6098b610
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a prominent one leading to a suspicious domain that is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable hosting, further supporting a malicious intent. The ML classifier and ClamAV detection strongly indicate malicious content within the PDF.

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://golowaki.ru/strik?utm_term=what+is+the+natural+rate+of+unemployment+quizlet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fe78f0fce75e.pdfIn PDF document text
    • http://voyazh-shina.com/aavesham_movie_in_telugutbd7w.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/27524298149.pdfIn PDF document text
    • http://smcjd.com/91133092956npkp5.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/jhivqgf/bendy_mod_apk_android_1_traffic_rider.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/ew7fjdL/halloween_costumes_women_diy.pdfIn PDF document text
    • http://electorat.org/24904186948twxvy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488817/normal_5feff274a9faa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464530/normal_602148af5043b.pdfIn PDF document text
    • http://winsl.space/surah_mulk_alkalam._pkh5l66.pdfIn PDF document text
    • http://nicechange.space/hssc_clerk_exam_2019_answer_keyrojsw.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/ggegc5z/wivaruneritalupepo.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/Khc2hah/96817520470.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/lebaxa/97431561176.pdfIn PDF document text
    • http://niworojuxine.rf.gd/poxinidubikefilawunoda.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/zupawomazoposa.pdfIn PDF document text
    • http://kagowuv.epizy.com/figawadani.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_off000122ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122AC 5432 bytes
SHA-256: 4c3b301ee3d35d23835c72666a43a34ad446abec1a10c7df3667347133172c1e
font_01_sfnt_off0001351e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1351E 10988 bytes
SHA-256: e1911cabe0b1db87913375d5a62899944a007172274b71980a563270a004391f

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