Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cd4d33378ab46e…

MALICIOUS

PDF

85.3 KB Created: 2021-03-03 01:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 53c61e92b2d7f5d6587c35cf654e1223 SHA-1: a1e3d982bfb62def54d5ae520f1ff12be7d57d8e SHA-256: 69cd4d33378ab46e24276d405ec5d750215ddbf4a199fc243ce6818787521804
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=godin%20a6%20ultra%20strings PDF link annotation
    • http://paxabak.mypressonline.com/what_is_a_device_used_to_measure_current.pdfIn PDF document text
    • https://visumosibe.weebly.com/uploads/1/3/0/8/130814065/pinazurinolowine.pdfIn PDF document text
    • https://lomobesozav.weebly.com/uploads/1/3/0/7/130774973/ca893203b7e0ae5.pdfIn PDF document text
    • https://pimakesoxokozo.weebly.com/uploads/1/3/4/0/134041299/loxomarikilov_nikafegaz_dezonebekafopij_wilenuwokodi.pdfIn PDF document text
    • https://pesasujax.weebly.com/uploads/1/3/4/8/134882000/9ff4d80f.pdfIn PDF document text
    • https://gilamasizate.weebly.com/uploads/1/3/0/7/130775108/gusidufa.pdfIn PDF document text
    • https://xubajibagi.weebly.com/uploads/1/3/1/3/131378916/torawipirosebule.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/clinical_pharmacology_and_therapeutics_9th_edition.pdfIn PDF document text
    • https://dosukasexu.weebly.com/uploads/1/3/1/6/131637789/9728338.pdfIn PDF document text
    • http://kurametugugu.mygamesonline.org/51418888629.pdfIn PDF document text
    • https://tunivarururi.weebly.com/uploads/1/3/4/0/134041149/f78e07358a.pdfIn PDF document text
    • https://wabozejitikaz.weebly.com/uploads/1/3/4/4/134495441/233b6707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogivuwe.onlinewebshop.net/xekem.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/qualities_of_a_good_ecd_teacher.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/regression_testing_example_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/92635714002.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/she_dodie_clark_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/gufozaset.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_off00010f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6C 5176 bytes
SHA-256: 7e17a7d5846f3fc6eed9e84a29a7d315703b6a0bc53fc95b3e3392bfda09e4c6
font_01_sfnt_off00012115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12115 11784 bytes
SHA-256: 0ba7d0c3cd9b39f8058166f3a7d50258ade9d865f9ae7f3e21d279bd35b4826f