Malicious PDF — malware analysis report

Static analysis result for SHA-256 599b0da7f60304dd…

MALICIOUS

PDF

73.6 KB Created: 2021-01-25 16:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 83d975d4abba770fecfcf62cc264c16f SHA-1: 93d09087d52121c51f27d9c3ff262121f3670692 SHA-256: 599b0da7f60304ddccf3d04eb5846d57675e653812c1809fe9157ace0c6577c0
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://jottigo.ru/wb?keyword=love%20rosie%20book%20review PDF link annotation
    • https://cdn.sqhk.co/fekigimuzib/iiehem7/39476906927.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472206/normal_5ff52482b1c06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407789/normal_5fe9d37a4ff3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381083/normal_5fe23dfc19074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_5fd112ad1fb6c.pdfIn PDF document text
    • https://cdn.sqhk.co/jekurona/1ghjdjg/the_black_room_movie_review.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/1667322.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/ifQjiXx/85916398819.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383449/normal_5fcc5d19bae4b.pdfIn PDF document text
    • https://jaxizunup.weebly.com/uploads/1/3/4/8/134885867/1313232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5fc7b77ac252e.pdfIn PDF document text
    • http://dumanejixaw.66ghz.com/78731919007.pdfIn PDF document text
    • https://teputire.weebly.com/uploads/1/3/0/8/130813428/1282080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381976/normal_5fda7f2bd880e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408709/normal_5ffb47230c2a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vijanemafe.rf.gd/sukemotama.pdfIn PDF document text
    • http://wepirizifomonij.epizy.com/35372154473.pdfIn PDF document text
    • http://vininotubosom.epizy.com/zalo_cho_pc_win_10.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_off0000e4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BB 4736 bytes
SHA-256: b6f5d23fa187e2963cfa594481d01a285742cc20e70222e6f60d5bc42d38592f
font_01_sfnt_off0000f502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF502 10788 bytes
SHA-256: ad91251e92992afcbb060b713f170cb575cc1a349dd5ad395431fb74016828d1