Malicious PDF — malware analysis report

Static analysis result for SHA-256 95081930acf46fbf…

MALICIOUS

PDF

73.2 KB Created: 2021-03-24 21:45:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9f98233c1f1c872e8ca0391ce33945 SHA-1: b7151fbce07587d4a3f20535cdcc1e30ef9bca86 SHA-256: 95081930acf46fbf5c962fb16562acba0196a23f47780b2d8cbd00e51b96d52e
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, indicative of a link farm or SEO spam campaign. The primary malicious URL identified is 'https://bologen.ru/wix?keyword=monterey+park+highlands+elementary', which likely serves as a lure to further malicious content. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URIs suggest an attempt to redirect users to potentially harmful websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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://bologen.ru/wix?keyword=monterey+park+highlands+elementary
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/5079087.pdf
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/358712.pdf
    • https://kuxijalubekuvi.weebly.com/uploads/1/3/4/6/134602409/2788117.pdf
    • https://napuximijagebi.weebly.com/uploads/1/3/4/7/134766840/vojovo.pdf
    • https://static.s123-cdn-static.com/uploads/4483604/normal_60047a00576b1.pdf
    • https://cdn-cms.f-static.net/uploads/4417405/normal_60436b86b39bb.pdf
    • https://static.s123-cdn-static.com/uploads/4414696/normal_5feb1fc4cf384.pdf
    • https://static.s123-cdn-static.com/uploads/4463552/normal_5ff6697dd921d.pdf
    • https://static.s123-cdn-static.com/uploads/4459776/normal_5fe242593e2bb.pdf
    • https://cdn-cms.f-static.net/uploads/4489045/normal_60136e2dbc45e.pdf
    • https://static.s123-cdn-static.com/uploads/4425723/normal_5fcbd0f98fe01.pdf
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/sunuzi_pisiwisara_mijizoxaket_wizusodo.pdf
    • https://cdn-cms.f-static.net/uploads/4403533/normal_6041490901e50.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f6ecb0cb-d72d-49f5-a579-424be1133783/gojokotejamorusip.pdf
    • https://uploads.strikinglycdn.com/files/067516a3-20a3-4ae4-bcd1-3def2b877c6a/34940462521.pdf
    • https://s3.amazonaws.com/vexosafugunu/sumogik.pdf
    • https://s3.amazonaws.com/wutisigila/the_myth_of_sisyphus_amazon.pdf
    • https://uploads.strikinglycdn.com/files/dacddca3-6857-44d1-8da7-9b56882815a2/69702735958.pdf
    • https://uploads.strikinglycdn.com/files/1c88f1e9-1a52-42cb-9feb-a0b7ddd6921f/kilebufizupafizesawut.pdf
    • https://uploads.strikinglycdn.com/files/d30fb081-1c76-4856-9da2-3ddec085e17f/how_many_degrees_between_the_tropic_of_cancer_and_capricorn.pdf
    • https://uploads.strikinglycdn.com/files/fcee49eb-35c1-4435-b626-e3969f5b2995/pokatefugubepixerumad.pdf
    • https://uploads.strikinglycdn.com/files/6f2a92b1-8348-4e1e-86e4-90dc9f20bfe7/international_isis_service_login.pdf
    • https://uploads.strikinglycdn.com/files/00cf3406-823f-4326-84bb-6d65a68b2f3d/ab_lounge_sport_directions.pdf
    • https://s3.amazonaws.com/lurutopobi/bionicon_chain_guide.pdf
    • https://uploads.strikinglycdn.com/files/8ad0e999-647b-4cec-b647-81fe908f606d/strategic_management_of_technological_innovation_melissa_schilling.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd8d.bin
4ffd648ede2f986e1503d3845b4561588c1cd30eca4dfcfb36a77779c547ea93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8D 5544 bytes
font_01_sfnt_off0000f053.bin
8dce239d90131a374c477344aef4b6c2a4d02e26a47d84e72e904406c7b34787		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF053 10896 bytes

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