Malicious PDF — malware analysis report

Static analysis result for SHA-256 704a4c21ddcd37a3…

MALICIOUS

PDF

65.9 KB Created: 2021-02-20 03:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1c6c5434faeb0c7f29a819509ffc125c SHA-1: 5cdcf06bccc9e6bf3c1339d0e6495e18d4960f1c SHA-256: 704a4c21ddcd37a38779332a62a1af20899ce436ee864f6efa75ffa2bc9c1ec0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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.
  • 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/wix?keyword=assassin%2527s+creed+2+imdb+parents+guide PDF link annotation
    • https://cdn.sqhk.co/ralapogifur/bihVhb8/5632213345.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448976/normal_6005bc6d1c216.pdfIn PDF document text
    • https://fovivijidilel.weebly.com/uploads/1/3/4/8/134888041/rofetukanosen-pevaz.pdfIn PDF document text
    • https://fajupumivut.weebly.com/uploads/1/3/4/1/134108914/8686150.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385427/normal_5fedbcf48fb10.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/ijhjcTr/dog_licking_screen_4k_wallpaper_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5fdbd0104e4b1.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/fEkrWib/xunagutobajuguxoze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404528/normal_602addc030d1d.pdfIn PDF document text
    • https://cdn.sqhk.co/zojudaje/wTBjfK0/gubeba.pdfIn PDF document text
    • https://zageporipemaza.weebly.com/uploads/1/3/4/5/134507549/7087589.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450746/normal_5fee1ba0d574d.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/iJhbgo2/general_mcinerney_scorecard_hammer.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/jifjcqI/zenalepegedodudiku.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/iijjjbV/file_manager_for_ios_7.pdfIn PDF document text
    • https://cdn.sqhk.co/gobikazifelo/t0ijOtH/19931350340.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/paxuvagal/97725769982.pdfIn PDF document text
    • http://molaken.rf.gd/bed_cover_sheet_ikea.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/vcds_18._9._0_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/50060604813.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/bumuposemesuzuwofiretu.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_off0000c435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC435 5656 bytes
SHA-256: 6358da313bac421987584e4ee7e178ac1efba2a5371a6f49f3cfdac40ccdfa34
font_01_sfnt_off0000d75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75C 10000 bytes
SHA-256: a65ae927004e3444158c1c29185aeaba7250ae39998129abce93429dde081c43

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