Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a4316c42eb5f67a…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 15:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3087577ceffc23cebade4b59453238b3 SHA-1: 330fac85139f785cc16cea6bd0723ed9fb1ea10f SHA-256: 5a4316c42eb5f67ad1ee4f76bc08968a1aa92d173ba6e53d8e1cb200d704280e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://vilenefex.ru/wix?keyword=what+words+start+with+ry PDF link annotation
    • https://solazipakiku.weebly.com/uploads/1/3/4/5/134509697/ludimomutesop.pdfIn PDF document text
    • http://dasezin.getenjoyment.net/ancient_greek_etymological_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/kulizuxekume/cUihihz/nobemulibaveguzovotugamof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_600034ffd71a8.pdfIn PDF document text
    • https://cdn.sqhk.co/vutabopi/j7gisFx/nagekikewafazuta.pdfIn PDF document text
    • https://fewebiporunivag.weebly.com/uploads/1/3/0/7/130775920/mawonaxen.pdfIn PDF document text
    • https://cdn.sqhk.co/towafeniruje/ijtGfIi/newegono.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/b0075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_603573a067b1b.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/2077443931.pdfIn PDF document text
    • https://cdn.sqhk.co/titabofasika/ggFnOom/rally_house_jobs_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498971/normal_602cf50009d3a.pdfIn PDF document text
    • https://bekazavaf.weebly.com/uploads/1/3/5/3/135327011/baradi_tunigegajebaku_nubiwiwevunev.pdfIn PDF document text
    • https://pejivepomut.weebly.com/uploads/1/3/5/3/135339444/latasute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449974/normal_602220e6aa25c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_a183677d6d7c4cfbb34fc5841c2c4b7f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/fajorikulararijulopato.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/what_is_tcp_with_example.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/49748118358.pdfIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_e738131f24f64496845ac18feccfc96a.pdf?index=trueIn PDF document text
    • https://42cc6f6d-9125-48bc-bce4-1bf15f49b1be.filesusr.com/ugd/7c30af_55d2a9a40a794db2ae59a270b11cbfc6.pdf?index=trueIn PDF document text
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_5dd4c87c68bc4a23ac3950d5deb9020e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/fupinez.pdfIn PDF document text
    • https://8c77b9b7-c39b-43d6-9406-6086bd2c0f93.filesusr.com/ugd/ee6770_0a1ff5e6dedf47f6b89bdbea4622f555.pdf?index=trueIn PDF document text
    • http://ziwivazud.onlinewebshop.net/easy_healthy_smoothie_recipes_for_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/17535445270.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/87412910103.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_off0000df74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF74 5088 bytes
SHA-256: 5d62b9f02a5d054514850c06816d64d97366457a51a77420f26738031df5d22a
font_01_sfnt_off0000f0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D4 10544 bytes
SHA-256: 7fa06b93a68afd895292348abd180541ea9fa5edf1d58459566a391acf4754a3