Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a9169261f6833b…

MALICIOUS

PDF

75.7 KB Created: 2021-03-25 20:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 79031d86e92a8711f287033b8a61eff8 SHA-1: c630e8f874f9762d46d3da0e4b213363a31ab02a SHA-256: 35a9169261f6833bd505a90bb847dc6be55f4daf6629b9321d395ad21038ade2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, suggests a lure related to 'electronics and communication questions'. The presence of an external URI and the ML/ClamAV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=basic+electronics+and+communication+questions+pdf PDF link annotation
    • https://cdn.sqhk.co/bagadogod/1hagghj/xekujuxavegetiresut.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/cjgg9RR/23572004972.pdfIn PDF document text
    • http://fesupopimos.66ghz.com/1409489779.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/hhjg1ha/zunixidoronopifi.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/Hhh4Yif/dune_1984_movie_review.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/YuIuHie/44063763368.pdfIn PDF document text
    • https://cdn.sqhk.co/xomatujod/sgj04xg/outlier_formula_iqr.pdfIn PDF document text
    • https://cdn.sqhk.co/gobonuzuwif/ihMjhjb/borisutebo.pdfIn PDF document text
    • https://cdn.sqhk.co/bisozowinala/gAxJDhi/percentage_calculator_app_for_android.pdfIn PDF document text
    • http://collegegraduatecentraldating.com/botany_for_degree_students5pdbm.pdfIn PDF document text
    • http://pshcomonhere.xyz/mazelile9u.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/lixisariwulo/descargar_musica_tu_eres_frankie_ruiz.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/81468972108.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/46798291809.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/post_wedding_reception_invitation_wording_template.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/finite_element_methods_for_maxwells_equations_monk.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/42360052488.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/unduh_game_brawl_stars_mod_apk.pdfIn PDF document text
    • http://ketaxesam.epizy.com/64673255963.pdfIn PDF document text
    • http://nerepigov.rf.gd/82255833838.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/izenda_reports_wiki.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_off0000ea73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA73 5476 bytes
SHA-256: d767ba12120b198cc822a80dd49551ac44650e89d938a638dedf25446bf6dc4b
font_01_sfnt_off0000fcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF8 10660 bytes
SHA-256: e2c577114f00903906432aecc607b49bc1d87b539ed099e1a9b4842a23f33dc6

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