Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f170f627548fcb…

MALICIOUS

PDF

70.8 KB Created: 2021-02-25 18:12:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: af47bd6c399dd33ba02bcd3f3c6c3045 SHA-1: a38d4615e659225459f67e46a255a17cce3003ad SHA-256: 08f170f627548fcb1b54de19b3cdf965695f86d834103730e1361b61d78c4a3d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/award?keyword=rii+wireless+keyboard+and+mouse+rk200 In PDF document text
    • http://options.expert/chuff_chart_spreadsheet40okm.pdfIn PDF document text
    • https://damobupakul.weebly.com/uploads/1/3/1/4/131453350/5c98cd09c24c6f7.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/jcW2cb2/zedofafe.pdfIn PDF document text
    • https://gobewuguwug.weebly.com/uploads/1/3/6/0/136056794/11d47396cd392b.pdfIn PDF document text
    • http://xumimoz.22web.org/wujuniwur.pdfIn PDF document text
    • https://datotumegodipe.weebly.com/uploads/1/3/2/7/132740351/rilogogekut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jokizexolej.epizy.com/pukidelunatotinume.pdfIn PDF document text
    • http://zilidezokap.epizy.com/apache_cordova_tutorial.pdfIn PDF document text
    • http://jipudovisubu.rf.gd/voxifokumeduro.pdfIn PDF document text
    • http://botarukekim.rf.gd/4067789852.pdfIn PDF document text
    • http://rojapaj.epizy.com/scouts_uniform_badges_go.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_off0000cc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC97 2952 bytes
SHA-256: cb9072f881c1fe0ad8900bbcc5a20a23fabb306412f64e001cac76c2a9509f2c
font_01_sfnt_off0000d726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD726 5652 bytes
SHA-256: 86421ec0e7a042ba036d681749a5dc2316bf7de7534c18a9fa3cc6f39ad8eb42
font_02_sfnt_off0000ea60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA60 10268 bytes
SHA-256: aa09110b65e91d17999895d9d5cbcb2fea76a0dac79d0b0bd5edc303e1ccaf9b