Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e6dbdf4b822fb5…

MALICIOUS

PDF

81.8 KB Created: 2021-03-15 00:53:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 87bd18f0b8873e3cc3fb3833c2f67413 SHA-1: 597edfad0496045b25b21dbde1abf5a376417e15 SHA-256: 96e6dbdf4b822fb59e6b95dfd7a5b9a6039cffd884f717b02040be7290c80690
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/wix?keyword=design+home+mod+apk+ios PDF link annotation
    • http://sodaapp.pro/total_flow_area_equation0s90v.pdfIn PDF document text
    • http://basagutidabe.sportsontheweb.net/how_to_brightness_vivofit_jr_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388627/normal_603acb42e66f5.pdfIn PDF document text
    • http://glossywp.online/descargar_libro_los_renglones_torcidos_de_diosa2jt1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379236/normal_600a5b2912353.pdfIn PDF document text
    • http://reawolt.online/toastmasters_international_competent_leadership_manualsczhk.pdfIn PDF document text
    • http://netekepipavosis.sportsontheweb.net/othello_themes_appearance_vs_reality.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_5fdeac46e28b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464052/normal_6045031fc94e7.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/10e6f3e0-d05d-4373-8f84-887c0cb6905f/fapidodikibitoxabim.pdfIn PDF document text
    • https://351e5f87-f9e5-4015-92cd-d601692b9ec3.filesusr.com/ugd/a0d0d3_9a8e63baed8a4d5e9f33a5ef5c2c5997.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa7b48b-e2cd-4605-bffe-9a66beaa2043/how_to_play_guitar_beginners_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e346f139-1875-4cf5-9387-2447f1ab1fab/bravos_xl_washer_5d_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffdd573a-d9d2-4ca2-8af1-2c2e2896f3a2/megalikajetoxuzagutifesib.pdfIn PDF document text
    • https://ca7c05ed-d233-4774-9cf9-08ff86aa6c73.filesusr.com/ugd/b42fd6_24da3fc81328458db2ecace944fc51e2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e1cc0f-4891-4e64-af0c-2cbb12add2d7/the_tyranny_of_merit_review_guardian.pdfIn PDF document text
    • https://3ae4d138-4ba3-4962-98fb-1b98b40a6a82.filesusr.com/ugd/38062a_b484cb0258e8406c95cfb66167e447ec.pdf?index=trueIn PDF document text
    • https://0ea28b16-58c2-472d-b6be-3e97fe9b7bb6.filesusr.com/ugd/696b8a_4de01d8dd54d4a9192ae593c1f212256.pdf?index=trueIn PDF document text
    • http://fikelamizogu.myartsonline.com/45712389174.pdfIn PDF document text
    • https://86146b48-cf95-488a-b5a0-22832f4589a6.filesusr.com/ugd/3b4eee_d1b8f50b761e44da8ca31b44cbf377b7.pdf?index=trueIn 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_off0001024a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024A 5308 bytes
SHA-256: 149bd123f8b80bef51c362129e26a9bba2b616adfe84b4d86ecc8d9fb9d9a0e8
font_01_sfnt_off0001143a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1143A 11040 bytes
SHA-256: 59dc3cc85a00152731fbda2a40d38abb3c57c1539a85fd660d1840cea702e2aa

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