Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad90c0d06160d7e…

MALICIOUS

PDF

70.5 KB Created: 2021-02-23 00:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 83bb9dcf9a1033dc4f629a1f2e8adb1b SHA-1: da6ed61c856c1c497178c5e85864715a6ef3872a SHA-256: fad90c0d06160d7ee7f699c8c6c4d9724125d5eb7c1a1d3737255ed6b425d597
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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=fruit+taste+test+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457560/normal_5fd83a0a232aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5fc5ce47230d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_602b2e09e4936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494893/normal_601bb8c188a3a.pdfIn PDF document text
    • https://govasosu.weebly.com/uploads/1/3/4/5/134519533/rejudim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_6004d3e6c3500.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426059/normal_5feb8dd8e26bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476294/normal_600bf3a2e6c5f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493867/normal_5ff7eabed9e08.pdfIn PDF document text
    • http://tohld.in/bauhaus_style_fonthyyi8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420600/normal_60160b50b7185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413696/normal_601ad766a0cd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_5fd2f52a9fcdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368972/normal_5fc639c84a155.pdfIn PDF document text
    • https://gopilabuvimira.weebly.com/uploads/1/3/1/4/131453416/73cea675.pdfIn PDF document text
    • https://bododomeliba.weebly.com/uploads/1/3/1/4/131408614/nepomoxoluxeberug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421207/normal_600f1db72f990.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388274/normal_5fc609a26b2f2.pdfIn PDF document text
    • https://kadeniki.weebly.com/uploads/1/3/4/0/134097858/15f5d725e7ff.pdfIn PDF document text
    • http://shopee24.site/el_cantar_de_mio_cid_castellano_antiguocqmad.pdfIn PDF document text
    • http://winoraama.fun/36744735711ek1ny.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/waxapoz/weblogic_application_server_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/xutonix.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/59016623745.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/9795731609.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_off0000d927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD927 4852 bytes
SHA-256: a84c16d08573e5c1b59c8fcf1333afe0717768c1e6bd9f86f2e602477d425077
font_01_sfnt_off0000e9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B5 10184 bytes
SHA-256: fb9e014588ad1e520c8df8e6e5106379aca0d40eb3ca4c29f46b39e256e5e1b1

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