Malicious PDF — malware analysis report

Static analysis result for SHA-256 59dedf683465d46e…

MALICIOUS

PDF

87.6 KB Created: 2021-03-14 05:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6ccce676348781be401470b3eb490766 SHA-1: d94fc1b22df18e06617b1bc9cdb8c8352306674b SHA-256: 59dedf683465d46eed474ff42abe2e51976831bfe25473e507ecfd52076fff93
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this, indicating the document's primary purpose is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/strik?utm_term=what+is+the+widest+baby+gate PDF link annotation
    • http://899themes-demo.ru/tuvisuretogewa956yf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410730/normal_6022e3405d2f1.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/lokemi.pdfIn PDF document text
    • http://tovarzone.ru/jixikepo4an3.pdfIn PDF document text
    • https://nujalujuxak.weebly.com/uploads/1/3/5/3/135347358/c2d39b26571488e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_602e63c36b882.pdfIn PDF document text
    • https://xevivipemasap.weebly.com/uploads/1/3/4/4/134481894/9014932.pdfIn PDF document text
    • https://nulebuset.weebly.com/uploads/1/3/1/4/131411431/6192756.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376125/normal_5feb63f0656ca.pdfIn PDF document text
    • https://pinowutofabu.weebly.com/uploads/1/3/4/7/134763632/2c3f7f04fa.pdfIn PDF document text
    • http://max-lifting.store/fazalerotorifezelugojolapu8fgd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/07d8f6ce-5592-42d8-8d59-7431585d2748/2162212121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a27227-60d4-4e37-bea9-03fa7c66b1bd/zimotagexobiban.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb0f2147-adb0-41a6-ade2-e5add290526b/playman_summer_java_game_dedomil.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_9fda6af042a14b5895fecdb9409f6982.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0859bc5-318e-4ad6-97f5-2fb5ce10d2f4/descripcion_de_los_personajes_mi_planta_de_naranja_lima.pdfIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_7d1b4827e022476bbc85e057e1b71a09.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/delicious_emily_honeymoon_cruise_full_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/denedafuduzetubep.pdfIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_5a407961cb5b4c2b9451aeac9332e257.pdf?index=trueIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_30b299de69ff4e6e81a01cbd010f77dd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b590712-0b04-4105-ad38-5476971369e0/m-audio_oxygen_49_mk4_fl_studio.pdfIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_ba8d25d1bdcd4f9290e683803d102924.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 4880 bytes
SHA-256: 7b5e99cdd8fb1b008659b1f277e2b15de196c683c81e402644309f64762faec9
font_01_sfnt_off00011e8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8C 10572 bytes
SHA-256: 176a3d7f8f0cedd2719b36f467e4dcf6ab059235d2d88a736f5e74f47773e763
font_02_sfnt_off00014240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14240 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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