Malicious PDF — malware analysis report

Static analysis result for SHA-256 48b2fd6f774712fd…

MALICIOUS

PDF

79.3 KB Created: 2021-02-07 02:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e8d57c183d29d9cfaea51847bd8ca5ea SHA-1: 1aec8596569c98fa3f2f34c26a96d6858391b1c2 SHA-256: 48b2fd6f774712fd2fc91e8fa332a5b17d8bc11b640f7a81b5c6b5dac28a75c1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/aws?utm_term=flood+insurance+underwriting+guidelines PDF link annotation
    • https://cdn.sqhk.co/kaxonavi/hhgfieN/qeasily_my_school_s_smart_learning_approach.pdfIn PDF document text
    • https://kabirajozef.weebly.com/uploads/1/3/2/7/132740353/xapotisu.pdfIn PDF document text
    • http://milky-rp.space/hallelujah_jeff_buckley_sheet_musicvjwd8.pdfIn PDF document text
    • https://cdn.sqhk.co/fafovewidom/0jcq6ib/witufapu.pdfIn PDF document text
    • https://cdn.sqhk.co/mifaruzamexu/iDhdPjf/96890654333.pdfIn PDF document text
    • http://tricitysikhs.com/kujupopidiwirogedewegf29bk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460975/normal_600c9381e7742.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/BfxWFja/3342986879.pdfIn PDF document text
    • https://zimegusak.weebly.com/uploads/1/3/4/6/134605775/6003459.pdfIn PDF document text
    • https://feliwisinawo.weebly.com/uploads/1/3/1/8/131856919/ebf58.pdfIn PDF document text
    • https://cdn.sqhk.co/ladesajisama/jjjdjgQ/78042011249.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/ijBCjaf/munarej.pdfIn PDF document text
    • http://fruittea.space/the_whole_earth_catalog_1974_editionuzie7.pdfIn PDF document text
    • https://cdn.sqhk.co/wepugozotap/j9LkYvZ/tijenivizeribo.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/X0hhbvY/bonedugegutuxefugenizu.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/heFBQic/tufoxelanajepiwosukezi.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/IYgggge/sub_zero_wolf_customer_service.pdfIn PDF document text
    • http://yesstore.pro/monifufitefapovugubish1y6d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF932 5156 bytes
SHA-256: 3d84d605ba98eb7a57d7f4d6c196366c1ae1d7ea39febf2b119516f0ec1bc8f7
font_01_sfnt_off00010adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADC 11016 bytes
SHA-256: f65d19dbd123b3606d54b0e008518f6699b1a7aa51e1e3d6f16c87b69f2f694a

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