Malicious PDF — malware analysis report

Static analysis result for SHA-256 a494d83dcd32fb37…

MALICIOUS

PDF

75.9 KB Created: 2021-03-08 20:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a5ef9970094565fe74da48c1a53221e0 SHA-1: 9fc578e88bfe0ba60a2b34d294cab9a1758a2aae SHA-256: a494d83dcd32fb3761d3564600236ac5ca65074dbef8cfa4e5e46b896198d4ef
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains a large number of embedded external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF structure indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/aws?utm_term=springfield+nor%2527easters+baseball+team PDF link annotation
    • http://it50life.pro/how_much_do_part_time_starbucks_barista_make9saio.pdfIn PDF document text
    • https://jutokikifugata.weebly.com/uploads/1/3/1/0/131070124/zewoma_nabuni_venumina_rajalaterewif.pdfIn PDF document text
    • https://jigurojo.weebly.com/uploads/1/3/5/3/135321607/cfb180ce.pdfIn PDF document text
    • http://ginononujex.iblogger.org/jugapulurigo.pdfIn PDF document text
    • http://avtoshtorki.shop/balufikurafitibawxo65y.pdfIn PDF document text
    • http://lisolu.org/509526390377w3pg.pdfIn PDF document text
    • http://tojugurorozusu.22web.org/kumopufevenujatukir.pdfIn PDF document text
    • https://pafegesufo.weebly.com/uploads/1/3/4/7/134719460/c576d878f2.pdfIn PDF document text
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/sitenezemiwefozis.pdfIn PDF document text
    • https://dunojezeb.weebly.com/uploads/1/3/4/5/134586234/dotopufimubiru.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://s3.amazonaws.com/zarevizebi/fuzorelefomokovi.pdfIn PDF document text
    • http://jerimopujokanar.epizy.com/metro_exodus_pc_performance_tweaks.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/emergency_preparedness_response_course_basic_awareness_answers.pdfIn PDF document text
    • https://63aa7d51-6c54-48cc-ac87-b710a0da19c3.filesusr.com/ugd/c8d394_3de14e54b1dc47149ee564794b8ca2a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawovojo/ambiano_coffee_capsule_machine_user_manual.pdfIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_7f9d4fda7ad94d8ab42c58fda68c6e9a.pdf?index=trueIn PDF document text
    • http://jemoxojuv.epizy.com/25046939311.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/phases_of_the_moon_worksheet_4th_grade.pdfIn PDF document text
    • http://xefavab.rf.gd/calligraphy_printable_worksheets.pdfIn PDF document text
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_57ae6083cc244d47aaa15ce919889563.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/donake/384295913.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/certified_ethical_hacking_study_guide.pdfIn PDF document text
    • https://ed7c5604-ec0f-4ae6-9d22-6d534b57d154.filesusr.com/ugd/1d5a3f_ee78024bb39f45ce8cf9c9927f3bbcfe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/vaguzoter.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/lokibitiwunupid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9F 5424 bytes
SHA-256: c266ea2dd152ff708086b4f91e4a96641cff2624abedf5a4195102d30ff677e3
font_01_sfnt_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 10784 bytes
SHA-256: 189c53cc43c95a58b6daeea0a447cfb7589cb47b2ae4aebd940b393e87b66eac
font_02_sfnt_off000113d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.