Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6a22ad9531d1f6…

MALICIOUS

PDF

75.3 KB Created: 2021-04-08 07:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 577553984cb1006f1df720132a75d107 SHA-1: b35053ff67998cf8432c07b6e1a0e65e1f760c5b SHA-256: 0e6a22ad9531d1f6b9904c318c852ea96036086ff974459a1df54ddcf6937a1a
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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/123?utm_term=present+perfect+tenses+exercises+with+answers PDF link annotation
    • https://saxurugilura.weebly.com/uploads/1/3/2/8/132814125/xidubukopawixes_kiviw_pezitikakodaw.pdfIn PDF document text
    • https://kubasujile.weebly.com/uploads/1/3/0/7/130776158/nilolalamuwij.pdfIn PDF document text
    • https://fidovasunub.weebly.com/uploads/1/3/0/8/130815093/0babec251f5.pdfIn PDF document text
    • https://nobasaxekomu.weebly.com/uploads/1/3/5/3/135322761/7694232.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_c55d067565cc44c3b6658132a195f3c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bodajaku/wupuzup.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/videoshow_apk_pro_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/indian_railway_enquiry_application.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/norovirus_outbreak_management_and_disease_prevention_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/reading_great_migrations_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/tobugidevanogifemavepin.pdfIn PDF document text
    • https://e691ad07-92dc-45fa-af10-8929b4045ede.filesusr.com/ugd/87b9a8_6c5c29a7b08c4c63b505b8254c897de7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pusori/89290615384.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/write_a_descriptive_paragraph_about_your_favorite_dish.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/replacing_ice_maker_in_maytag_refrigerator.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/retemolamixojajibu.pdfIn PDF document text
    • https://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_fde3e052829e4f30ab5432c827f47a0e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/73746148349.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/13134378595.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/solving_and_graphing_inequalities_printable_math_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/9221341449.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/nulazakoxisi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e92a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92A 5232 bytes
SHA-256: fe53ed665df742abe0aa96bb09cca27e2ef2015aeb25e71dd61534a28123c3c6
font_01_sfnt_off0000fb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0C 10764 bytes
SHA-256: 193a973f8ffb5919d5c4cde3e744b1b06decda502667b0cec38c4719d011fa9e

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