Malicious PDF — malware analysis report

Static analysis result for SHA-256 474d74a4ae06960e…

MALICIOUS

PDF

72.9 KB Created: 2020-10-05 11:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 09ed971aceb3504d13c54f2ffe01db98 SHA-1: a6b6547a4fa355fa5f83677ee23831ca45baf1d3 SHA-256: 474d74a4ae06960e07c2de687e0deff604a7f58da698f21e915af213ff00fdd2
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gettraff.ru/strik?keyword=glister+spray+amway+pdf In PDF document text
    • https://site-1043292.mozfiles.com/files/1043292/rufazanupun.pdfIn PDF document text
    • https://site-1038898.mozfiles.com/files/1038898/pakasutasakokepirale.pdfIn PDF document text
    • https://site-1039444.mozfiles.com/files/1039444/4617102352.pdfIn PDF document text
    • https://site-1037224.mozfiles.com/files/1037224/300883374.pdfIn PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/lugetikivaxufo.pdfIn PDF document text
    • http://lovul.lotusranch-homes.com/uploads/1/3/1/4/131454215/savupuvesun-jorunazan-muwamanija.pdfIn PDF document text
    • http://gaxivas.sikhheritagegroup.com/uploads/1/3/2/6/132695543/dabojogelivot-mukuf-polowijuxav-genis.pdfIn PDF document text
    • http://nemaben.monicaabrahamsen.com/uploads/1/3/1/6/131606875/zegoxonovib.pdfIn PDF document text
    • http://files.futurethoughtsnow.com/uploads/1/3/2/7/132712483/426811.pdfIn PDF document text
    • http://mikiwapiw.sincerelypresley.com/uploads/1/3/0/7/130740019/gozakixibabe-nerolapamarinol-dazure.pdfIn PDF document text
    • http://files.demosae.studio/uploads/1/3/1/0/131071262/a775ed5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8275650-6bd6-4b70-b6ba-740950a8794d/sugatagelene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57138b5a-6e2e-45cb-bbca-c28a14bfa65e/14402390330.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a593e74e-75e9-42ed-a1df-f6e2ebe87a5b/tobolelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5512985-6887-4c65-bae2-7ff8d013468e/34426872225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a0a34e-6968-4afb-8c52-cab5c15e97e3/52898593543.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000caa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA4 5412 bytes
SHA-256: a3873cdef2bfdf2f230096fe9bcfee98b6510fbaa4a6cf349fbc21d5142417f2
font_01_sfnt_off0000dd11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD11 10400 bytes
SHA-256: c3f8096d4aee0cae60111fa176a2b6cbf0692b8ea82d35eb1749d3153db0600f
font_02_sfnt_off000100de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DE 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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