Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b82ccd33ee5e96…

MALICIOUS

PDF

76.3 KB Created: 2021-03-09 06:47:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 10908e80f05183776b5e11655eae0b24 SHA-1: 9b03a816655f9fe1688f0bb2c21f0a05cba86007 SHA-256: 03b82ccd33ee5e96c6b26c8a3e3ed6704b5c3a05e04f10b680bb52c81668e64b
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' point towards an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://maypoin.ru/award?keyword=allocation+apportionment+and+absorption+of+overheads+pdf PDF link annotation
    • https://cdn.sqhk.co/fefamuve/eIgegjQ/europe_front_full_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_6014077336b7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420902/normal_6009a05e73c49.pdfIn PDF document text
    • http://whitetwo.space/ansible_template_absolute_pathgqj1s.pdfIn PDF document text
    • https://gedimonisesejed.weebly.com/uploads/1/3/1/1/131163996/67ae31e3dd.pdfIn PDF document text
    • https://vokijovagugudis.weebly.com/uploads/1/3/0/7/130776016/273e7233f7d05a.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/0jhjjM6/20140573940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490272/normal_5fd60e8273b17.pdfIn PDF document text
    • https://cdn.sqhk.co/xokekekav/fBunwTD/pirelizetiziribomesar.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/lmjbzhs/43064943453.pdfIn PDF document text
    • https://vudefuzafovafid.weebly.com/uploads/1/3/4/6/134630521/976205.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468553/normal_6009944d15ccf.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/ijifhbW/rumble_in_the_bronx_blu_ray_upc.pdfIn PDF document text
    • http://neip-forum.fun/xbox_360_status_code_03-80-00u4v6k.pdfIn PDF document text
    • https://cdn.sqhk.co/tirazirevemu/dYgEMep/hong_kong_covid_news_scmp.pdfIn PDF document text
    • https://cdn.sqhk.co/mevutaxisut/gZhjjd5/sazolorosadapax.pdfIn PDF document text
    • http://bitcoins-profits.com/hopital_pix_96eqg0.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/xarojapi/cameraworld_ltd_formerly_digital_depot_stevenage.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/can_you_keep_a_secret_movie_online_subtitrat.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/offline_dictionary_english_to_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/cachoeira_da_formiga_mateiros_tocantins.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/printable_math_puzzles_for_3rd_grade.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_off0000ed73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED73 5584 bytes
SHA-256: 349814e348beaafcd8867d35cc5b26e35833d344bb17ccc80bb6fa62a58b3256
font_01_sfnt_off00010046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10046 10260 bytes
SHA-256: 1dc72708374cec97c656fc51a77c3dffca9497721cfd7fc9f90cbb20a7f5d196

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