Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be287f96180b850…

MALICIOUS

PDF

82.0 KB Created: 2021-03-14 09:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81270083f64f497ccccc2b6e784e5aef SHA-1: 6b50dcbf6d10db74828223f250bc55df76551747 SHA-256: 5be287f96180b850014c17eab2b7376444c7dc09daa4c457872678e67ced4f3c
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 domains associated with link farms or potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/123?utm_term=angular+5+formgroup+array
    • http://silokegawup.iblogger.org/21503401043.pdf
    • https://vadewowiruku.weebly.com/uploads/1/3/1/3/131382700/7558530.pdf
    • http://zonetufe.iblogger.org/25408455620.pdf
    • https://xisosisudotaju.weebly.com/uploads/1/3/0/7/130738948/tiloz_kamavixumebuze.pdf
    • http://rodopigigixodak.iblogger.org/compositions_of_functions_maze_answers.pdf
    • http://rakuropa.iblogger.org/lobulopesexa.pdf
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/putodupamaved_wifovo_sujipomuladej.pdf
    • https://liroxinumapidaz.weebly.com/uploads/1/3/5/3/135348088/2c7e5236133eee.pdf
    • http://muzotom.22web.org/friend_zone_2019_subtitle.pdf
    • https://togodinaxudare.weebly.com/uploads/1/3/1/6/131637070/wugazalidumak.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://napezidemilolez.epizy.com/63689817185.pdf
    • https://s3.amazonaws.com/livivuvuwugeb/tagulekivoperemuw.pdf
    • https://s3.amazonaws.com/mujevubutukoxu/lopewes.pdf
    • http://baromar.epizy.com/musibopuzusazemugela.pdf
    • http://luzigipo.epizy.com/process_of_performance_appraisal_in_hrm.pdf
    • https://s3.amazonaws.com/salosibejodod/john_lennon_imagine_sheet_music.pdf
    • https://s3.amazonaws.com/rogugagatuf/the_fallen_angel_book_of_enoch.pdf
    • http://wefijusadoveva.epizy.com/basilio_da_gama_o_uraguai.pdf
    • http://pavasokunise.epizy.com/autocad_2017_blocks_free.pdf
    • http://jorunodup.rf.gd/murachs_sql_server_2016_for_developers_online.pdf
    • https://s3.amazonaws.com/kovezodepugov/cute_cartoon_couple_hd_images.pdf
    • https://s3.amazonaws.com/lolaritemukole/36971330663.pdf
    • https://s3.amazonaws.com/vuliwisuwig/manual_de_propietario_chevrolet_trax_2016.pdf
    • https://s3.amazonaws.com/sinadi/integrated_math_2_volume_1_answers.pdf
    • https://s3.amazonaws.com/vibasujefir/48510946065.pdf
    • https://s3.amazonaws.com/fajujiju/reference_sheet_maths_standard.pdf
    • http://tuguwogut.rf.gd/how_much_to_write_a_screenplay.pdf
    • http://xetoluwe.epizy.com/babington_academy_ofsted_report.pdf
    • http://gutuneze.rf.gd/54139229603.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede8.bin
4d9fb593beda4417d60a97ed914363401b73cf537c519b9cd2e1e82da544d924		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE8 4892 bytes
font_01_sfnt_off0000fe6e.bin
3f019984cfdfe6c84274c7669782eb41d5b5f4473003a8ae79e5f286dfbd04e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6E 2252 bytes
font_02_sfnt_off000108ae.bin
ff26fce88b57e58fa85c0acb7557e8aa39cf2ca6c299451e44c197456bd257ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108AE 10172 bytes
font_03_sfnt_off00012b90.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B90 4324 bytes

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