Malicious PDF — malware analysis report

Static analysis result for SHA-256 074d738489121740…

MALICIOUS

PDF

71.3 KB Created: 2021-02-10 21:31:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d0aba19855c2d9ebeed44438054706ba SHA-1: 4d19eba35fd7677cba33a20d73ae67dff817300c SHA-256: 074d738489121740ab0a5709eeee8aa208a832520b98e725c5fe513d1db1d8a6
224 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.
  • 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://yafferge.ru/123?utm_term=apc+index+mismatch+overclocking In PDF document text
    • https://static.s123-cdn-static.com/uploads/4386365/normal_5fc690522c73c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389108/normal_5fe2ee996d913.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402737/normal_6003e9c0a3f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_6019ca213198a.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/6271029.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474220/normal_5fd626031673e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426543/normal_5fd1378d45617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_601726308323c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5ff255df6a716.pdfIn PDF document text
    • https://kukatuvitakutir.weebly.com/uploads/1/3/4/6/134690336/lidol-zujowu-wanebusovos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubuvajaroxe.epizy.com/brooklinen_luxe_core_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/guriwuxisonu.pdfIn PDF document text
    • http://fadakivok.rf.gd/mulivepiw.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/princess_don_t_cry_lyrics_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/cherubs_day_nursery_kimberley_ofsted_report.pdfIn PDF document text
    • http://tiriburud.rf.gd/printable_personal_monthly_budget_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/cisco_packet_tracer_gigapurbalingga.pdfIn PDF document text
    • http://radujexoxetapil.epizy.com/rovebebidotab.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_off0000da9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9E 5668 bytes
SHA-256: 294d224cdfd818430c449e1f81fe7a1823c8813b59bb9954bbd2e99a0b705e36
font_01_sfnt_off0000edca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCA 10020 bytes
SHA-256: e0582514f7033f7679d0063ec4eb32910600e4a4f370798981c193a4d9242fdc

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