Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd4652ed2c560bd…

MALICIOUS

PDF

93.5 KB Created: 2021-04-03 00:37:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: c637c960274b365355fed1eecfd55295 SHA-1: c850a889f3e9da1ed44dcfaafe8dabbebc912f66 SHA-256: 4fd4652ed2c560bd04f400245851e528b9dace1dfbffa5cdd1dde928e0cc4d08
136 Risk Score

Malware Insights

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

The PDF contains a high-confidence heuristic indicating it's a phishing lure, specifically using an SEO redirector to disguise a malicious link. The embedded URL, https://seumenha.ru/wix?keyword=brother+innovis+40+manual, is the primary indicator of this malicious redirection. While no scripts were directly extracted, the PDF structure and the nature of the URL suggest an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=brother+innovis+40+manual PDF link annotation
    • http://nelodagavezes.mygamesonline.org/bodybuilding_exercises_chart_free_download.pdfIn PDF document text
    • http://ketousa.site/free_printable_lowercase_alphabet_tracing_worksheets0p9yl.pdfIn PDF document text
    • http://sdek-24.cc/49161299751vzr8m.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/when_worlds_collide_song_spongebob.pdfIn PDF document text
    • http://rajudadude.mygamesonline.org/16674828216.pdfIn PDF document text
    • http://islandlandscapesbb.com/35207639487jxeb8.pdfIn PDF document text
    • http://merokomazojewi.scienceontheweb.net/reprendre_confiance_en_soi_livre.pdfIn PDF document text
    • http://nawitebexu.medianewsonline.com/67054462113.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/which_harry_potter_book_took_the_longest_to_writet8ule.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/lomiwexuva/72196561401.pdfIn PDF document text
    • http://nokubivuva.rf.gd/pdf_to_word_converter_online_without_email.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/finnegans_wake_lyrics_irish_rovers.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/basic_english_grammar_for_competitive_exams_free_download.pdfIn PDF document text
    • http://zasagugidi.epizy.com/free_digraph_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/ho_bisogno_di_un_informazione_in_inglese.pdfIn PDF document text
    • http://xuperag.epizy.com/acmg_guidelines_mthfr.pdfIn PDF document text
    • http://jowosos.myartsonline.com/alien_3_william_gibson.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/award_templates_for_students.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/79908650966.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/68177447248.pdfIn PDF document text
    • http://debetofewozuri.epizy.com/naranexiniw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001180f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180F 3548 bytes
SHA-256: 216edc6c90278a900b2c5940b11168d5c2988f34e21e6d9edb997a2611925bff
font_01_sfnt_off000124d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124D6 5264 bytes
SHA-256: c78cfe39f1d1b6c6382a21f0eb2e2f891dc35945a8941c64657ac1a7b113d458
font_02_sfnt_off0001369c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1369C 16304 bytes
SHA-256: f979c0b4bac2115d3afa9bd73943f2cd71e0bfd9186e8cf411fb12ddfce44b19

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