Malicious PDF — malware analysis report

Static analysis result for SHA-256 1142a0bd5c1c7f09…

MALICIOUS

PDF

63.8 KB Created: 2021-02-16 17:01:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7ac72a651b6899e32cb52c68fde7285d SHA-1: 104a7bf54ce7fd385aed66c6cfa6d931ce582763 SHA-256: 1142a0bd5c1c7f09a8f3b0b69c3e84dd6407be5a3db1eaf6ced39777b3f1d5d0
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://seumenha.ru/123?utm_term=geometria+trigonometria+y+geometria+analitica+conamat+pearson+pdf PDF link annotation
    • http://pedrons.space/framed_ink_bookkwbx7.pdfIn PDF document text
    • http://serdyukov.pro/vozizedanu7kj2.pdfIn PDF document text
    • https://kadekorik.weebly.com/uploads/1/3/1/4/131453454/ca36c9.pdfIn PDF document text
    • http://domainlimax.xyz/654083373616hxqy.pdfIn PDF document text
    • http://shoop-fh.ru/sizidatedakapop8k8wi.pdfIn PDF document text
    • http://kagiburof.iblogger.org/80590961040.pdfIn PDF document text
    • http://pixubak.iblogger.org/vunolusokasagi.pdfIn PDF document text
    • https://tudevapibor.weebly.com/uploads/1/3/4/8/134884273/wazoto.pdfIn PDF document text
    • http://smartcreditus.info/alphabet_killer_movieml4c8.pdfIn PDF document text
    • http://xsafak.com/bunny_carrots_food1g9js.pdfIn PDF document text
    • http://tortomsk.ru/water_drop_live_wallpaper_s10_download7ydux.pdfIn PDF document text
    • https://reralifinopu.weebly.com/uploads/1/3/4/0/134018386/3189802.pdfIn PDF document text
    • http://com-signto2.xyz/why_does_my_ryobi_strimmer_keep_cutting_outzd233.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://voginafukut.rf.gd/cet-_cell_dhe_b._ed._hall_ticket.pdfIn PDF document text
    • http://lususexore.epizy.com/30250329838.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_off0000bb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB3B 5608 bytes
SHA-256: b57aad58dc35bfafde304ad4017fba83dfd0458b60f5e98525ad3031b5d91ea0
font_01_sfnt_off0000ce41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE41 10616 bytes
SHA-256: 5a4630c028971d42a8c19b731ee8cc37d348ca091b8a16d252e88459bb7ffe34