Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d051b0bf531d64…

MALICIOUS

PDF

105.7 KB Created: 2020-11-18 02:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f485f3d98a81a870f5bd6dc1f81c2a75 SHA-1: 0565fd4e28398ae7a34aa00bca27f2ef78288f82 SHA-256: e0d051b0bf531d641378f91a9d38bd4afd144ace9fae6ca54405b623fff08116
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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.
  • 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://traffine.ru/aws?utm_term=sunshine+coast+fishing+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368266/normal_5fa6fc616e34a.pdfIn PDF document text
    • https://xifamosavujefiv.weebly.com/uploads/1/3/4/4/134457952/muwepute.pdfIn PDF document text
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/visokumevu.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/virijoj-tiborirowepam-nipor-webexok.pdfIn PDF document text
    • https://xetolakovi.weebly.com/uploads/1/3/4/6/134604046/rinaravagef.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/xujiniri.pdfIn PDF document text
    • https://paseboke.weebly.com/uploads/1/3/4/4/134432883/db85873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5f89367c713d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f87204260238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8a23e51a20c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/fiddlesticks_jungle_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/apache_tomcat_for_ubuntu_16._04.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/324f4e0a-a5d5-40a8-883e-0d212554e94a/45181710125.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/negozuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a53cc73-66b2-477d-832a-641517abb5ea/bdo_highest_level.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000154da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154DA 5228 bytes
SHA-256: ee92c7d7ec291959e42fb2d49d7ffbd0384273eb7742faa26d4731ed33271647
font_01_sfnt_off00016692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16692 10948 bytes
SHA-256: fad0253a41ed01968cfe29d12d82f720199ea7b46b947027214ea5519381b13c
font_02_sfnt_off00018b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B67 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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