Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f0683dd50826b2…

MALICIOUS

PDF

72.7 KB Created: 2021-02-26 05:29:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7a8b1f8b0bf9bef75d16dfd8af8566ee SHA-1: 1b5bd04fc135a94e1b3ada3c6afd6ab76db407ec SHA-256: 68f0683dd50826b22c9df9e5c02a436c3a3074e35de8829590b9ab85b67c9eab
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://leonvi.ru/wix?keyword=snapware+ornament+organizer PDF link annotation
    • https://cdn.sqhk.co/nuvexajamu/ayejeOq/70978069043.pdfIn PDF document text
    • https://cdn.sqhk.co/sosobita/k6jf9VC/science_lab_equipment_video.pdfIn PDF document text
    • https://dawudetunik.weebly.com/uploads/1/3/5/9/135972975/8197729.pdfIn PDF document text
    • http://kepibarufot.22web.org/fox_animal_spirit_guide_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/E8jijgc/granny_barbie_mod_texture_download.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/emergency_care_13th_edition_chapter_2_test_answers.pdfIn PDF document text
    • http://ziviludemedo.iblogger.org/55362954549.pdfIn PDF document text
    • https://cdn.sqhk.co/wexovezojab/idOgiQb/losuxo.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/TyfTgjq/67676779392.pdfIn PDF document text
    • http://islandlandscapesbb.com/othello_act_1_scene_5_summary9help.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/savifin/tchaikovsky_violin_concerto_op_35_sheet_music.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/english_phonetic_alphabet_chart.pdfIn PDF document text
    • http://zejibanunepi.myartsonline.com/bowflex_xtreme_assembly_video.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_off0000e0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FA 5172 bytes
SHA-256: 24caf597b4c7f3c69faa7c3f9ea8c1746b9fd36856339a1db3363c51f0d047d2
font_01_sfnt_off0000f296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF296 10476 bytes
SHA-256: eafb3594382898e70c2d190def7b1fe990c29bcb7b69da67d8dfdeac71299482