Malicious PDF — malware analysis report

Static analysis result for SHA-256 395aa5b325d73224…

MALICIOUS

PDF

78.9 KB Created: 2021-02-28 08:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 743e1c773ca36d93f5504c78df3d7b8c SHA-1: 0938ea011dac882d47645d3f96511be3f135e5e9 SHA-256: 395aa5b325d732241d8b4f9d3f65a37e6cca347ae797b34aba377c30c50dcdac
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://botokaw.ru/wix?keyword=paramount+players+nickelodeon+movies+logo+2019 PDF link annotation
    • https://lakukuvirukum.weebly.com/uploads/1/3/0/8/130874631/8672826.pdfIn PDF document text
    • https://guxiwuwo.weebly.com/uploads/1/3/1/0/131070036/fotep-kulituwazovo-vatelugizaro.pdfIn PDF document text
    • http://dumubemajizukov.medianewsonline.com/how_to_use_ly_adverbs.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/154122519809ob7m.pdfIn PDF document text
    • https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/voxadipako-wavusar-xesanupegerali-kesurajolegu.pdfIn PDF document text
    • http://flowerport.shop/oublier_un_sort_dofus15s1f.pdfIn PDF document text
    • http://wujejejifi.mygamesonline.org/16427167807.pdfIn PDF document text
    • http://juwupexutaval.mywebcommunity.org/dd_phb_classes.pdfIn PDF document text
    • http://werikipirojenob.scienceontheweb.net/tomitesorofeza.pdfIn PDF document text
    • https://bodonovovo.weebly.com/uploads/1/3/1/6/131607174/8775656.pdfIn PDF document text
    • https://vazewelekataba.weebly.com/uploads/1/3/1/6/131606588/pipexitu-pizuzubere-zusajuzigelir.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/fajujiju/18706510414.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/73583445909.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/probability_worksheet_grade_11.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/what_time_did_ram_dass_died.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_off0000e8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B2 6104 bytes
SHA-256: d93ba5fb7c8a2192baebe05b29af45d627b6b5bf7a9a3a82c285a7bb4bc98590
font_01_sfnt_off0000fd76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD76 15560 bytes
SHA-256: 199ecb66e2536f677fc23d2aecff9d73444b1940128cee6b17dca0c164e59c17