Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e13bf3a0be4e850…

MALICIOUS

PDF

87.3 KB Created: 2020-10-27 21:13:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ba6f6ba7dbb6b4b621df6169752ad2ef SHA-1: b7b16f81fea191dd9007365c3135b7748c73b97a SHA-256: 9e13bf3a0be4e8507c30448272d0c4880c8c2b91bcd7bc51ca003f3efb91d49f
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a link farm hosted on Weebly. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure for Minecraft-related content. The presence of numerous external PDF links suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/123?keyword=plastic+minecraft+texture+packs+1.16.1 In PDF document text
    • https://tibulewozimok.weebly.com/uploads/1/3/4/0/134017320/5095217.pdfIn PDF document text
    • https://xutifivaluladar.weebly.com/uploads/1/3/4/3/134337767/wamapo.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/jetuk.pdfIn PDF document text
    • https://zewuxufasebi.weebly.com/uploads/1/3/4/3/134320084/nubivifonipisosiful.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/zenubosul_rutufiso_kumojogopedi_jutatidasofiv.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/2092662795d09.pdfIn PDF document text
    • https://sajosapisede.weebly.com/uploads/1/3/4/3/134344890/tugupataxatape-tewozogure-vupevel-jekuma.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/suvarewi_rumuvonixis_mogugalameri.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/9222131.pdfIn PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/sufegasedeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0894/8386/files/active_and_passive_voice_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/99651425200.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/74022550814.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/mamivusetavon.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/zavovadirifuz.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/84349712116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8842/7181/files/free_conversion_from_to_word_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2618/6908/files/83077889693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/95695065993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/nabugajegatikegugedavebes.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/brosur_kabel_eterna.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/agriculture_in_india_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/ribomanatamanuvivit.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/moulting_in_insects.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/action_research_proposal_in_teaching_english.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_off000118dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DC 5532 bytes
SHA-256: 96ff30de075d2fbf35160d03fcaa732d49c3d5298b3460e90ca0da7920c0cff1
font_01_sfnt_off00012b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B99 10284 bytes
SHA-256: 59d17499a620fe131438f1078253b15facd41d65be4187fc43641058194274ba

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