Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3285e92db5b073…

MALICIOUS

PDF

70.3 KB Created: 2021-03-17 02:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c79716dc327128cb560ad7795da10279 SHA-1: c798be17fe8dcafb873a62928345da138e359ac1 SHA-256: 0e3285e92db5b0730e02d2a05b3e00c5a17ff48bf6a27958ec0b5ddeef62ceff
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a link farm detection and a critical ClamAV signature. The document contains numerous external links, suggesting it is designed to redirect users to potentially harmful websites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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.
  • 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://zajinet.ru/123?utm_term=catalogo+dupree+campa%25C3%25B1a+7+2019+pdf PDF link annotation
    • https://fabapetabi.weebly.com/uploads/1/3/4/6/134687037/tufixamuji.pdfIn PDF document text
    • https://pijutizomi.weebly.com/uploads/1/3/4/6/134686964/c44f260030.pdfIn PDF document text
    • https://cdn.sqhk.co/midusuworab/ejb7WYE/suddenly_it_s_magic_full_movie_free.pdfIn PDF document text
    • https://zanewodibamejat.weebly.com/uploads/1/3/0/9/130969445/rawixazenavoroz.pdfIn PDF document text
    • https://gamunodeda.weebly.com/uploads/1/3/4/7/134765824/b06482.pdfIn PDF document text
    • https://bevubulik.weebly.com/uploads/1/3/2/6/132680874/valamupukedekunoj.pdfIn PDF document text
    • https://cdn.sqhk.co/tarekekog/hajeiiV/41204054017.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/g8U1hf1/healthy_baking_recipes_with_applesauce.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/gfPIx3O/how_to_make_pixel_art_in_photoshop_cs3.pdfIn PDF document text
    • https://zibeselev.weebly.com/uploads/1/3/4/1/134131471/fuvakininigazodatafi.pdfIn PDF document text
    • https://vunojomilubokub.weebly.com/uploads/1/3/0/7/130775688/fosaw-kofamaxipajazed-dafekupabep.pdfIn PDF document text
    • https://depularo.weebly.com/uploads/1/3/4/6/134601330/f4f5a63cccd2e74.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabumamuv/2sRtjjU/82617621862.pdfIn PDF document text
    • http://zodimevumu.22web.org/rosoduvazezutixem.pdfIn PDF document text
    • http://zivudib.66ghz.com/how_are_you_english_answer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/astro_vision_lifesign_horoscope_kannada_free.pdfIn PDF document text
    • https://2ddf8be6-044d-4f30-b6fd-16c032829cd6.filesusr.com/ugd/9827ea_d335d06af9e84d10afc69b7deb07811f.pdf?index=trueIn PDF document text
    • http://loluvojuz.rf.gd/bsp_and_npt_thread_size_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/accp_guidelines_warfarin_overdose.pdfIn PDF document text
    • http://jofarasaxorepow.rf.gd/wasuradawe.pdfIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_5d6eb59b5a8d43b0b99d812f9db3f23d.pdf?index=trueIn PDF document text
    • https://13fad4bf-7224-44b3-802b-16842e97d241.filesusr.com/ugd/b14664_a3a12308eef74280820ca6c94ddf77fb.pdf?index=trueIn PDF document text
    • http://digasima.rf.gd/5969781836.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/76578072867.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_off0000cfba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBA 5976 bytes
SHA-256: 7c6506d2efbe0630409c881b986665c6c0edcfbf00eda6588f9b90ef509bc8b5
font_01_sfnt_off0000e3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C7 11960 bytes
SHA-256: 55cf813d4569b98139b7d51835885588ae6fef14899451981aec8d0501f1975f