Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bdf18723621b4ed…

MALICIOUS

PDF

84.9 KB Created: 2021-03-10 08:33:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 38119afd5080dc31bcc400a483968e3a SHA-1: b50734e68d0063419977990bdc37f36f8668c197 SHA-256: 9bdf18723621b4edc6d9ceffcd27049818c0f94d8d5c0ac24ea9f218942da824
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'Payment redirection / bank-detail change lure'. The presence of many links, including one to 'ponafet.ru', suggests an attempt to direct users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://ponafet.ru/award?keyword=garment+catalogue+design+pdf PDF link annotation
    • https://cdn.sqhk.co/befozaxulot/jiijL1C/fisixemukasuvexafufu.pdfIn PDF document text
    • https://cdn.sqhk.co/jogibigeda/yz8hfjb/25287289800.pdfIn PDF document text
    • http://babobekoru.66ghz.com/73861423157.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/hhiyiaR/kavanozaxosalugage.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/buvakurorulanut.pdfIn PDF document text
    • http://zisujetev.iblogger.org/vimium_cheat_sheet.pdfIn PDF document text
    • http://unreguezff.rest/ford_mekaniske_bremsercc1c2.pdfIn PDF document text
    • http://cmbclientes.com/40475837271msg50.pdfIn PDF document text
    • https://cdn.sqhk.co/suwuwewazaka/fgiwgdw/jerojebupida.pdfIn PDF document text
    • http://manapuzasupin.sportsontheweb.net/pengobatan_angina_pectoris.pdfIn PDF document text
    • https://cdn.sqhk.co/fixuzigetir/Ohjgchi/74040271828.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/lopeteb/how_the_grinch_stole_christmas_words_to_describe_the_grinch.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/zuzitejologuvezizekum.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/70140216983.pdfIn PDF document text
    • http://tudulem.rf.gd/37630374050.pdfIn PDF document text
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_2abad2aee0834e69bbd6f357aed75166.pdf?index=trueIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_4318b17af3864719bc203f621e8177b3.pdf?index=trueIn PDF document text
    • http://miwewugewu.atwebpages.com/lifiwirowimuno.pdfIn PDF document text
    • https://254b3b0b-79dc-4992-827c-fd4bb3db3178.filesusr.com/ugd/f515ca_1c8fe03df04a4e46bf7c8ea6608cb92d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/chernobyl_animal_deformities.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/29311589735.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_6d004d13875841b5941d946193eea7db.pdf?index=trueIn 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_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 5508 bytes
SHA-256: 46fe3580cfe13bbce75d210fc1f08ba93f3c9c8e45c9a5aa4e19d4f94f9646da
font_01_sfnt_off00012318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12318 10348 bytes
SHA-256: 2a34a4a9dfecd86717a6fa74ca9d8a1289628a2c55712669bb111a94c1fa69ee

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