Malicious PDF — malware analysis report

Static analysis result for SHA-256 8136a2291ff00bc3…

MALICIOUS

PDF

66.5 KB Created: 2021-03-01 18:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d97883ac94bef5e8ab734b57160890d2 SHA-1: 89306019da96895eb7830e9b7e9c5fd9d5d8762f SHA-256: 8136a2291ff00bc3dbeee93687b993e422442b8871e244704565c8d384bdc440
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://xezojetit.ru/award?keyword=kumon+worksheets+grade+2+pdf PDF link annotation
    • http://zakosemej.mypressonline.com/how_do_i_reset_my_rinnai_heater.pdfIn PDF document text
    • https://bekajujoxofutit.weebly.com/uploads/1/3/1/4/131406668/gugewef-bigakitag-webekam-vivedupaned.pdfIn PDF document text
    • https://lolijizaw.weebly.com/uploads/1/3/4/4/134461821/memumedesakaz-virutepajanivi-laboti-wunuxukebibakim.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/Fjeijnx/wintergatan_marble_machine_sheet_music.pdfIn PDF document text
    • https://gulipuzajetag.weebly.com/uploads/1/3/5/3/135397689/203902.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/JLVFlii/87025920327.pdfIn PDF document text
    • https://fujelaxu.weebly.com/uploads/1/3/4/7/134704358/4f3a0d7ad3d.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/2jjFchh/origami_box_instructions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jijilijovejoto.rf.gd/piezo_buzzer_circuit.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/finding_sum_of_arithmetic_series_worksheet.pdfIn PDF document text
    • http://soweverupez.rf.gd/80248991825.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/coilcraft_0402cs_datasheet.pdfIn PDF document text
    • http://pimudovi.epizy.com/live_weather_report_houston_texas.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_off0000c72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC72F 5680 bytes
SHA-256: a97613afd5aabd95da9330ce97e8f1dd95f4ef534b2fe66c28835f997f73c367
font_01_sfnt_off0000da71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA71 10212 bytes
SHA-256: 40afe7c4d774c2a3262fdaf74b410556f1bffb3808373326c467d7289e7347fe