Malicious PDF — malware analysis report

Static analysis result for SHA-256 0394caa8eac42123…

MALICIOUS

PDF

77.7 KB Created: 2021-04-29 00:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 021ade8841e9a2e438c6e3d0475df495 SHA-1: c5b4667619d97482d6e88858938549ea679d95ee SHA-256: 0394caa8eac42123239e1887dda970656eea0a686426b4ff1c4bfc52dc7ae664
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://pelibifir.ru/strik?utm_term=wolf+of+wall+street+gif+matthew+mcconaughey PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446643/normal_5fca2d4ec9c21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454684/normal_6025918a1c87d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497081/normal_604f356665626.pdfIn PDF document text
    • https://lejegibovijidup.weebly.com/uploads/1/3/1/4/131438293/muduvoduf-nofusezabatur-dobilutaxe.pdfIn PDF document text
    • https://mujekakuvegaxum.weebly.com/uploads/1/3/2/3/132303245/7942298.pdfIn PDF document text
    • https://dofopukirisozut.weebly.com/uploads/1/3/1/4/131437491/9021544.pdfIn PDF document text
    • https://xesapexoxes.weebly.com/uploads/1/3/4/6/134633169/3770412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_606aa2ce38bf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5fd959b04a935.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378170/normal_5febf36fb73df.pdfIn PDF document text
    • https://kovibokasekur.weebly.com/uploads/1/3/4/8/134880184/1684473.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457014/normal_5ff4c1a9c034a.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/24915e37-ab5e-48be-b006-90ef61efc852/roundtable_of_reviews_for_the_half_has_never_been_told.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/venetujopidele.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/o_reilly_python_books.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/nimorakipujovakabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59aa48e2-620d-47ad-9f41-9b93266a4bf0/713932915.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/26859590194.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/frases_de_amor_y_respeto_a_los_padres.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/jebefubibomumerugujula.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/vanilla_wow_joana_s_alliance_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/1_pulgada_cuadrada_a_cm_cuadrados.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF169 5500 bytes
SHA-256: fde49526bb605979d8c879b554db5a86e1faae20ff3317b6ab22aefe2c47e5c4
font_01_sfnt_off00010416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10416 11064 bytes
SHA-256: db9a701babec36eb5caa7b71c5a2e07f1db1e0918c5b1b5a5f1e77bb9c595051

Open this report in the interactive analyzer, or submit your own file for analysis.