Malicious PDF — malware analysis report

Static analysis result for SHA-256 775d1166735297ee…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 06:32:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 32e4dd9c564ee6cb6be10ffd0d1466cd SHA-1: c591be29224d2e7510387f4f17ea9190f502dccd SHA-256: 775d1166735297eee10fcc655efb339558efc2019cf4fc0de0173a3ba0834063
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=asus+rt-n66u+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446395/normal_6009f07f3c135.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/civjjfT/tuvamakifuxamapof.pdfIn PDF document text
    • http://itravelgr.com/jofevekutiaw7.pdfIn PDF document text
    • https://papukelub.weebly.com/uploads/1/3/4/6/134666119/4853467.pdfIn PDF document text
    • http://vazutiz.iblogger.org/android_tablet_with_gps_sensor.pdfIn PDF document text
    • https://pivatebovuwize.weebly.com/uploads/1/3/0/7/130775292/vixukon_laworerupuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426280/normal_602ab0ba639f2.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/tuvawadezet.pdfIn PDF document text
    • http://websporizlehd.com/59948870822ypgu7.pdfIn PDF document text
    • https://nuxirudeduw.weebly.com/uploads/1/3/4/4/134442083/9323f935.pdfIn PDF document text
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/sanimolabanov.pdfIn PDF document text
    • https://pakupefo.weebly.com/uploads/1/3/0/7/130776676/4229670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_601f9dab21c58.pdfIn PDF document text
    • https://binemipo.weebly.com/uploads/1/3/0/8/130874238/rudorosideline.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367919/normal_5ffae01d0a1ee.pdfIn PDF document text
    • https://vipavogezeguw.weebly.com/uploads/1/3/1/0/131069860/bodoz-betipejelaxumit.pdfIn PDF document text
    • https://bufujibuku.weebly.com/uploads/1/3/4/8/134862056/zizopudezafujara.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijovapafibowuw.rf.gd/28355333815.pdfIn PDF document text
    • http://fawituwiluke.epizy.com/jalalesagobetizomuxito.pdfIn PDF document text
    • http://manepiri.epizy.com/56613035338.pdfIn PDF document text
    • http://tajarajizuwoso.rf.gd/birla_mutual_fund_folio_consolidation_form.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_off0000cfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEE 5004 bytes
SHA-256: 913883feee18bc41b207a6599f35663ed7ab83fc7565cb2c6c3a5274879075a4
font_01_sfnt_off0000e0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D7 15212 bytes
SHA-256: 2e6fa50e42c8d085872fc7e4a36c6706f6cea3701e97eb953432a44d5545277a

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