Malicious PDF — malware analysis report

Static analysis result for SHA-256 962135eebf7b7fb3…

MALICIOUS

PDF

68.4 KB Created: 2021-02-23 10:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: df56acfc47d097eca1d562015360fb01 SHA-1: f4a5671c5eaf659d549331db7b85d9cfc89a52a3 SHA-256: 962135eebf7b7fb3a48d941a55ec983acdf2eff660ed76b1704d0b2779c1c312
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=bedford+book+of+genres+pdf PDF link annotation
    • https://jabakatuni.weebly.com/uploads/1/3/1/0/131071057/4ff2e9c0a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_60179df540e66.pdfIn PDF document text
    • https://bivamotitujodo.weebly.com/uploads/1/3/4/7/134712473/vovowuludosujak-wasof.pdfIn PDF document text
    • https://mogewojelepa.weebly.com/uploads/1/3/4/6/134681452/f914e7607d7.pdfIn PDF document text
    • https://vesodebeso.weebly.com/uploads/1/3/4/3/134314426/vuxozomodelemogajoti.pdfIn PDF document text
    • https://vamarimorojikav.weebly.com/uploads/1/3/4/6/134640123/fotin_juvaxan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417220/normal_601b9bad64397.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447467/normal_5fcb68b3d2fd2.pdfIn PDF document text
    • http://wavikedinufefe.iblogger.org/california_sick_leave_require_doctors_note.pdfIn PDF document text
    • https://zonotilikoper.weebly.com/uploads/1/3/1/0/131071062/gigexoseme.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/waxegatulo/91841582569.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/rowatavuxezesokifuben.pdfIn PDF document text
    • http://xipipowateselok.epizy.com/79386696491.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/ditafefenewabivasof.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/13799624237.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/dezidezo.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/celine_dion_i_love_you_more.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/21582324717.pdfIn PDF document text
    • http://bexiponezewan.rf.gd/the_golden_tower_magisterium.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/13914385746.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/wallpaper_engine_workshop_without_steam.pdfIn PDF document text
    • http://nowavef.epizy.com/49159187430.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_off0000cf55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF55 5220 bytes
SHA-256: 465ee33513acdf8b6b162c9fc2c9e6f1460a9662557f21c04c7c97aa59aae007
font_01_sfnt_off0000e132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE132 10284 bytes
SHA-256: ea9a836ba8c0887b4ef1a28b1ae7e3d8f20d3ece59006c4e35ba408ce96cc62a

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