Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bfced9c1af05e3…

MALICIOUS

PDF

68.8 KB Created: 2021-03-07 00:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fae6516b799db6f94d09092a20fc60ac SHA-1: 12f8083151c39eab059786a39cc5c3f0d8e1b0fd SHA-256: 20bfced9c1af05e3271e98ed1ac5d0114fdf9b7be0ad33d373610912ba26d9c9
252 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://dafemum.ru/award?keyword=how+to+reset+boneco+humidifier In PDF document text
    • https://sitoluvumoroge.weebly.com/uploads/1/3/4/7/134762666/1ffb3a65b72c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501046/normal_603b72d39530c.pdfIn PDF document text
    • http://magnifioco.site/neon_stack_blaster_smash_helixal5nu4.pdfIn PDF document text
    • https://fugunukotuji.weebly.com/uploads/1/3/4/5/134589730/xatagesejixarerajivi.pdfIn PDF document text
    • https://sawamamuwez.weebly.com/uploads/1/3/5/9/135992332/dagoduset-binexap-zipiv-zegawolivafuw.pdfIn PDF document text
    • http://goodsfor.life/how_much_sodium_is_in_a_wendys_chilikyjrf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501233/normal_6038297aa2de0.pdfIn PDF document text
    • https://ruzejome.weebly.com/uploads/1/3/2/6/132681971/f6e7e1dc32d8.pdfIn PDF document text
    • http://triple-doska6.club/sirozafijepiwimose1t3cn.pdfIn PDF document text
    • http://kpupnov.pro/define_jumpstart_synonymb2gzx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452173/normal_5fd88c12ddd94.pdfIn PDF document text
    • https://nivunosanogerog.weebly.com/uploads/1/3/4/5/134516177/wizawumigitifa.pdfIn PDF document text
    • http://itawegan.space/kenon_holdings_ltd_annual_reportdpzaj.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/jujalu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369646/normal_5ffdca0f44b9e.pdfIn PDF document text
    • https://koloputumoti.weebly.com/uploads/1/3/4/8/134887370/dekepom-pezawo.pdfIn PDF document text
    • http://gibelepij.scienceontheweb.net/creative_writing_worksheets_for_elementary_students.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_dafae68ab1984c28a4e1f22ac8330ef5.pdf?index=trueIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_5d4b65be706b47f4afb6480bb29f920e.pdf?index=trueIn PDF document text
    • https://ce322291-b3da-4cc2-ae0f-523e25daec44.filesusr.com/ugd/4530da_10536fca18694c9bacf27c5262450c93.pdf?index=trueIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_b31f045d69654b6c85fc675f946fc540.pdf?index=trueIn 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_off0000d16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16E 5212 bytes
SHA-256: 1cd813726920cce59574d58a37163ff2f0ae646b63224cf65aa52f20eec2073b
font_01_sfnt_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 10196 bytes
SHA-256: af597f2c8b99906bd711713829b849bfb90e70e85f918cd40781394bf4cef521