Malicious PDF — malware analysis report

Static analysis result for SHA-256 889316134e86ccf8…

MALICIOUS

PDF

76.3 KB Created: 2021-02-05 04:07:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0b25685dece7f26abfdd7bd4af6a3ac9 SHA-1: 574f29a79b7ad42b47148502ddaa2a02e46a90d6 SHA-256: 889316134e86ccf881e3cf8fcdd051fdac8bb279f1c344bbaddb54eb81bc5e19
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/123?utm_term=land+before+time+leaf+scene PDF link annotation
    • https://vufosaxirit.weebly.com/uploads/1/3/4/0/134018891/guzavabudizoba.pdfIn PDF document text
    • https://vebafuxitupum.weebly.com/uploads/1/3/4/8/134890404/1848321.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/xakimojedef.pdfIn PDF document text
    • https://vipobonufemug.weebly.com/uploads/1/3/5/4/135401160/45066551.pdfIn PDF document text
    • https://vumopofusub.weebly.com/uploads/1/3/0/8/130874587/batuwadojalu-muwozarub-bexizadagojo.pdfIn PDF document text
    • https://zedabobosarafon.weebly.com/uploads/1/3/0/8/130813357/6297615.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/8041821.pdfIn PDF document text
    • https://poxigupi.weebly.com/uploads/1/3/1/3/131398264/vofuremod-loxamolok-zosajesiv-mopofikopinuziw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josekopiguvalup.epizy.com/betogi.pdfIn PDF document text
    • http://wojixefem.epizy.com/12512186119.pdfIn PDF document text
    • http://radisabuvaba.epizy.com/hallelujah_thuthi_umake_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/s_letter_dp_free.pdfIn PDF document text
    • http://pikuvideposem.epizy.com/ucsf_som_absence_request_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/asana_premium_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/clearance_form_template.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_off0000ee0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0F 5248 bytes
SHA-256: b26a9204ca9519afc057fcd1250ed358e25c820fa2457df864bf384d9c73dddc
font_01_sfnt_off0000ffd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD7 10644 bytes
SHA-256: 7de6e536ff72e2677045c65290f503abf3c27d6d780bbd299879ecac0c0dfbfb