Malicious PDF — malware analysis report

Static analysis result for SHA-256 f47e8f3917c9e1c2…

MALICIOUS

PDF

85.3 KB Created: 2021-03-15 14:28:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7249d80452aa11d7ed5e30cfb9b7866e SHA-1: cee6d43d1caf1c5b070c24f3d0411d166fb91052 SHA-256: f47e8f3917c9e1c2a0a456149b354209d683cce5ca593b7f2cdb76be94076ed2
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of embedded external links, with one suspicious URL pointing to botokaw.ru. The presence of numerous links suggests an attempt to manipulate search engine results or direct users to phishing or malware-hosting sites. No scripts were extracted, but the PDF structure itself is used to facilitate the malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/123?utm_term=sheet+metal+store+near+me
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/pijoxozekov.pdf
    • https://dojibabebane.weebly.com/uploads/1/3/2/6/132682208/gixato-feludoji-tibareg-pokizetekabi.pdf
    • https://wurilulisewanid.weebly.com/uploads/1/3/4/7/134728532/zoxalikinob_kamezavofof_rotukadi.pdf
    • https://mudagetani.weebly.com/uploads/1/3/4/3/134381332/905773.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5f16a030-85cf-4f7e-a352-bb481167b2df/apple_iphone_5_cases_and_covers.pdf
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_a16b17e460c141518c4b8f1abe244b04.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0bf736dd-e87d-4428-9b09-5758f9ab3d42/jepopo.pdf
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_829f8c6b41d94727b690bf25df0f172a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/31cff14c-d494-4bdb-b9d6-734875ce8649/82530498266.pdf
    • https://0e098354-e5d1-4afc-9be7-763a70ae5e44.filesusr.com/ugd/ef253e_ce255ca3e7054fca9c0bc10ba1f8ea48.pdf?index=true
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_c17f2ad4b83e44888f8799d0d6d7b254.pdf?index=true
    • https://uploads.strikinglycdn.com/files/31062125-5edc-47d9-958a-d0a9ebaee4c6/integrated_advertising_promotion_and_marketing_communications_7th_edition.pdf
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_c56f45713976474a8cef547befe60508.pdf?index=true
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_00287a04359e44a38e5ca6e5ef6c1969.pdf?index=true
    • http://romevakamijoke.epizy.com/fodinabagutatixiseder.pdf
    • https://uploads.strikinglycdn.com/files/bd4a6a8f-d435-40d4-a093-5ea4705952bb/bhagavad_gita_15_chapter_in_kannada_with_meaning.pdf
    • https://uploads.strikinglycdn.com/files/a73e6b9a-51a8-40f1-ae23-40be6d62fc1e/diesel_fuel_injection_pump_not_working.pdf
    • https://711a90e7-97f2-4eab-8690-3003ec1e9b64.filesusr.com/ugd/a0905b_86104694693c4d718c41919dbe3fc968.pdf?index=true
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_078981c262614a1eb630da4d83c336a0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/781d8a46-e5d4-47cb-bb7b-29b27da46dfe/94346363511.pdf
    • http://wisorak.epizy.com/41705943182.pdf
    • https://9df6fdd8-df71-43fb-87ad-b121b2de7416.filesusr.com/ugd/e0d0cf_b4c211b549904a3fbc98c1df675c1ba6.pdf?index=true
    • 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_off00011378.bin
fb67568b4814576c38bfb2abde0c05cc576a669f6dd213f39fda995419a47f7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11378 5028 bytes
font_01_sfnt_off0001245e.bin
7fa721d0269d1ca93ba7028fba6ebe4bc7c6698959cd4bac11926b5ec9242cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1245E 10416 bytes

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