Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f7ef9a8ab16f01…

MALICIOUS

PDF

72.6 KB Created: 2021-02-14 22:15:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c1ccc7cd5dfb933c2db096717a4a48dc SHA-1: 32e0b6fe0c505e2f13743c92bc6ee59244345365 SHA-256: 04f7ef9a8ab16f0108b399c27797aaee59136dc13c7d8eee3cd73a232c1a297e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jacksth.ru/wix?keyword=ap+biology+big+idea+2+free+response PDF link annotation
    • http://tidexozi.22web.org/company_job_offer_letter_format_doc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_60218f978a690.pdfIn PDF document text
    • http://rotixumuzu.22web.org/76828854434.pdfIn PDF document text
    • http://pshcomonhere.xyz/vovevepiwemukubelubonw1nd.pdfIn PDF document text
    • https://gixixujenusig.weebly.com/uploads/1/3/4/6/134663953/5783699.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/c0HNChi/mofetewutakajozoremizi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490539/normal_6008cf5f9e6a2.pdfIn PDF document text
    • http://grigolia-studio.ru/outer_ear_infections_in_adults_symptoms2mxk2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472783/normal_5fc67363750c7.pdfIn PDF document text
    • http://svoydvalend.xyz/hypertension_guidelines_american_heart_association2tyfw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369802/normal_5fe07d2268576.pdfIn PDF document text
    • http://raicen.com/mupalanakujibuvojujoto5c6.pdfIn PDF document text
    • http://ital-girl.space/fm_approval_guide_20184h65d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tedivepi.epizy.com/75587474730.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_off0000ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED9 5572 bytes
SHA-256: a44bfda7294d7cf6f9ccc64147c25b745ea4c31a862c951a7a67614290878cd6
font_01_sfnt_off0000f1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E1 10564 bytes
SHA-256: 917d7fa583e29c2b0e77b9d65cb40e62ddee451061fec4a5ebef004e1b34f8b6