Malicious PDF — malware analysis report

Static analysis result for SHA-256 de20e215f2b29d97…

MALICIOUS

PDF

72.3 KB Created: 2021-01-31 18:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 11ed1d2391da91e7e2cdd0a8eb0f9346 SHA-1: f2b272867aba505761dd6b0129de17e510c50968 SHA-256: de20e215f2b29d97814bc7d55c99f0342d08f32be6229e458ada32b083ae3c98
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://crophysi.ru/wb?keyword=primenap%20free%20sleep%20tracker%20for%20apple%20watch In PDF document text
    • http://vezagoxutejoza.66ghz.com/85311999960.pdfIn PDF document text
    • https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/bojalob.pdfIn PDF document text
    • http://ek-arenda.ru/wejaxegezuvp8566.pdfIn PDF document text
    • http://lightly.store/pokajewam1f9z6.pdfIn PDF document text
    • https://negapisege.weebly.com/uploads/1/3/4/6/134635707/621126.pdfIn PDF document text
    • http://milanbeach.fun/nick_robinson_teacher_movieo77ly.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/tezazopubosupi-mobiki.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/walden_two_portugues.pdfIn PDF document text
    • http://bezugunafagomup.22web.org/20170107295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/geraromu/images_of_flowers_wallpapers_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/lisirexazerefomunajo.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/1569716033.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/60226735129.pdfIn PDF document text
    • http://xiwagopa.epizy.com/bodofimutagobagubipel.pdfIn PDF document text
    • http://wasizematimom.rf.gd/19211221129.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_off0000de99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE99 5412 bytes
SHA-256: 4ef32a5c3b6a3c196d4b5c49b59824ca9cb2bc054a5314a8904b7096885d2ebb
font_01_sfnt_off0000f0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EB 10336 bytes
SHA-256: 381c4b22b3f9212bf5f5e2fcc3663cfccad6d7c0ac46ec9226b3bb7906e5f26d