Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d6aca94b46b583…

MALICIOUS

PDF

44.1 KB Created: 2020-10-21 09:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4bced99201129ada8a5fbd607a083b40 SHA-1: ed6e0b8ac376aa6de528d76658239f822d7ad829 SHA-256: c8d6aca94b46b58330325979ab8cef6f91ef8cc256f70b212a9987cacc831a60
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, with one specifically pointing to malicious redirector infrastructure at 'https://gettraff.ru/123?keyword=objectives+of+social+research+pdf'. The document's structure and the presence of many external links suggest a link farm or SEO manipulation tactic, likely intended to lure users to malicious sites. No scripts were extracted, but the embedded links are sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gettraff.ru/123?keyword=objectives+of+social+research+pdf In PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/davevifuviwizo_vopurudige_jalekuxagud_daxamafira.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/mozagulad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dea2b2f7-500a-480c-abbc-06a8530d2f0b/ejercicios_presente_continuo_6_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cce028ec-5892-4ab1-87b9-2a900c716d4b/43540242742.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea02004-081c-4a58-86f7-131adf0333ee/wowosilimin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c48474f-82e6-4185-8cf9-8ac295272499/80682243514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56eaa03-c438-4bb0-8510-07f01a254dd2/kamirapemudekisorotumoleg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9facd6f7-47d4-47d8-910c-f1bd951c4d44/80318728456.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a51971bf-29ee-4ff9-8812-9a8bfc835582/36873178968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5866d7bc-8bcf-493f-9ac9-f92ebc14944c/wudebirugati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3031d38a-c56a-4609-af20-2db9a48d592f/talodanasufunipopago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc75c996-d152-42e7-baa1-aa016708b2f8/67377251983.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/adding_fractions_coloring_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/anti_inflammatory_drugs_pharmacology.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/mutexojemul.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/mitosis_and_meiosis_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b0c3dc5-08e4-4243-ae8d-1c5991ae419e/gaxukatavikebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a823f0d-2c15-4d11-a96b-08a772770ff7/ladaridodemutut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1a0aa2-646d-42d3-b00a-aa495d2efd6f/suxatadujepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85920715-06c2-41c6-a9fc-efcba929b783/45324737900.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/pin_diode_construction_and_working.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/calculus_early_transcendentals_11th_edition_solution_manual.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_off00006f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4D 5548 bytes
SHA-256: ca2764832d57fad736f2790f36e5bb8a04ebe92269d090c114443c131b50402f
font_01_sfnt_off0000821b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821B 9596 bytes
SHA-256: faaf48c9b7a8f73b09adf5bc0501a36aa4ffa9b608c7b5cad5076d8225c7c3e3