Malicious PDF — malware analysis report

Static analysis result for SHA-256 d21e23866a2fea54…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 10:46:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ff1647179af58e65db75e3cf080755a0 SHA-1: cc668b0d1940a5242ca0efc3e11dfa985e134b9f SHA-256: d21e23866a2fea54df6b9908aa9da280333950568bb486d5edcfdf25ac8604c3
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://leonvi.ru/wix?keyword=phillies+seating+chart+hall+of+fame+club PDF link annotation
    • https://cdn.sqhk.co/xonarewu/hbedtha/crossfire_car_for_sale_in_nigeria.pdfIn PDF document text
    • https://cdn.sqhk.co/kimokajuz/3ji1jhd/starcraft_remastered_cartooned.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482023/normal_5fcb1e23d9e75.pdfIn PDF document text
    • https://suzagadagaxu.weebly.com/uploads/1/3/0/7/130775939/8352843.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/1icigha/wemozivedirox.pdfIn PDF document text
    • http://kezekimoridim.22web.org/red_blood_cells_formed_in_bone_marrow.pdfIn PDF document text
    • https://cdn.sqhk.co/gojogefe/4SkW8db/absorption_rate_meaning_in_chinese.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xadiromawa.epizy.com/vocational_education_and_training_in_australia.pdfIn PDF document text
    • http://wixudilasajigil.rf.gd/kenutotukofaboxedelugobe.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/78031090858.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/duffy_mercy_sheet_music.pdfIn PDF document text
    • http://foduwisidowej.rf.gd/beviwawozed.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/xemudinitorusuguvilizitef.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/valentine_day_images_with_quotes.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_off0000d9a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A8 5436 bytes
SHA-256: 5ff5d151f7da5802272c92698829e8ddae3abd3c330621248a34db79536dcb81
font_01_sfnt_off0000ec00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC00 10608 bytes
SHA-256: 362135c777a066fafa84c6def9edbb0d890a0182b4769d7657b7ac1df82eedce