Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9c5e68c6f93943…

MALICIOUS

PDF

78.9 KB Created: 2021-03-03 03:56:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 3350d833b62a42f8e4d3b9364c7bbe33 SHA-1: f1d909e0f8f4b936b4c17a7f0bef179af5c3d3e8 SHA-256: 0b9c5e68c6f939432fd925dacb0ba876358f12b8a0a12656fbdd8911b8aa8280
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://xezojetit.ru/strik?utm_term=samsung+top+loader+washing+machine+reviews+australia', is presented as a search result, indicating a lure to trick users into clicking. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=samsung+top+loader+washing+machine+reviews+australia PDF link annotation
    • https://wireluxibesoz.weebly.com/uploads/1/3/4/4/134402736/kenekenu.pdfIn PDF document text
    • https://napifilimikap.weebly.com/uploads/1/3/1/6/131606974/palufetokuz.pdfIn PDF document text
    • https://tazabojadikeze.weebly.com/uploads/1/3/4/6/134648043/1317261.pdfIn PDF document text
    • https://budemarapi.weebly.com/uploads/1/3/1/3/131381681/motusetesero.pdfIn PDF document text
    • http://stylecurtains.com/cuanto_gana_un_diamante_en_amway_espaay21bq.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/iXhdmfy/blue_apron_vs_hello_fresh.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/heie9hq/fenulejojex.pdfIn PDF document text
    • http://keepxufi.space/litelixofinazuduruvopepiibhpm.pdfIn PDF document text
    • http://erogancolumbia.site/nikka_zaildar_2_full_moviemqvjc.pdfIn PDF document text
    • https://sarotokatot.weebly.com/uploads/1/3/2/6/132682281/8284666.pdfIn PDF document text
    • http://makedctl.site/67037694022lpwts.pdfIn PDF document text
    • http://hookup154.space/college_student_resume_for_internship_template3mhf5.pdfIn PDF document text
    • http://taher-tcac.com/54148715276ytohd.pdfIn PDF document text
    • http://save50.pro/very_hard_rebus_puzzles_with_answersgkftq.pdfIn PDF document text
    • http://reduslimitalia.site/34802184463w8evl.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/dotivaf/64928862621.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/86002761645.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/5680376087.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/free_cv_template_uk_reed.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/kepel.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/62920412652.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_off0000f523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF523 5744 bytes
SHA-256: c5e3aaa90b2a0a285ac9159c78359518790fdecfd37fdf58283a031c16813973
font_01_sfnt_off0001089e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1089E 10956 bytes
SHA-256: 495f9e835c3cdaa72c050b8746d82ba7cdef2f53c46b6d20aa8cfd059a8874be

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