Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dca0b600711e11…

MALICIOUS

PDF

63.8 KB Created: 2021-01-31 08:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c2e902164b86e989758a65ab05b04df4 SHA-1: c649007a0b7db504fd05623fcabffdd17023d777 SHA-256: e2dca0b600711e11b5f574a739347ebc02054fcbe010474593c89aa404d91401
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=it2301+java+programming+notes+pdf PDF link annotation
    • http://islemleriniz.org/manapuzavixagafipivabo9btgh.pdfIn PDF document text
    • http://triple-doska4.club/xalibibuzz61he.pdfIn PDF document text
    • https://webuwexuzebonal.weebly.com/uploads/1/3/0/7/130775053/nemolosewumupaxax.pdfIn PDF document text
    • https://wajegeteb.weebly.com/uploads/1/3/4/8/134896445/towadirolix-dudezej-mukitasuvewi-dasakudiko.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxiwimemo/SjfhiiL/environmental_studies_definition_scope_and_importance.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366965/normal_60094f743bc16.pdfIn PDF document text
    • https://xawavefite.weebly.com/uploads/1/3/4/6/134667803/megoteguxi-mijom-xisosubiged.pdfIn PDF document text
    • http://ndfnasg.xyz/256735067408cgxw.pdfIn PDF document text
    • https://gikositaga.weebly.com/uploads/1/3/4/7/134773380/bf86c8774.pdfIn PDF document text
    • http://prizinsta365.online/imdb_vikings_cast_season_5t9v3o.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/ehdwzOF/restaurants_near_archer_hotel_austin.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/5ha6E5U/97443455043.pdfIn PDF document text
    • https://sajofagexureleb.weebly.com/uploads/1/3/4/6/134652103/fovevaziwukupon.pdfIn PDF document text
    • https://puwibovur.weebly.com/uploads/1/3/4/6/134639487/b42c9bdd1.pdfIn PDF document text
    • https://remogomati.weebly.com/uploads/1/3/4/7/134748537/woxameram-dawer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB4 5892 bytes
SHA-256: 6a326d5a606a52d764a4cf241aa9ff3188d8e15181aa26ee69279b1270b51de5
font_01_sfnt_off0000cfc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC2 10168 bytes
SHA-256: e96e7a3676094554944d2f50021cfe04525d39e6e73468e87373f5c1d27eb517

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