Malicious PDF — malware analysis report

Static analysis result for SHA-256 9339ea7dd38ccd6e…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 17:37:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3a015f50cd7aa69dacd40972c165eb41 SHA-1: 03a7da5554d4fca6742cab4b673292ec01e10679 SHA-256: 9339ea7dd38ccd6e88601b2c94431b0733b9be0dc6fb54f86185169ae55a64f0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=snake+unblocked+games+77 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483349/normal_5fc9dc603ff57.pdfIn PDF document text
    • http://profaudit32.ru/jifijixudokugojovatuzikumzghko.pdfIn PDF document text
    • http://baugroup.info/phone_tapping_software3efzw.pdfIn PDF document text
    • https://sezebotari.weebly.com/uploads/1/3/1/6/131636698/544630f5f2d5d.pdfIn PDF document text
    • https://vulemozebo.weebly.com/uploads/1/3/4/6/134693025/3243181.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/walden_two_portugues.pdfIn PDF document text
    • http://gsmall.space/67802357397i71dh.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/votuweroxigezog/knee_ligament_injury_treatment_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/rovumilalazoribo.pdfIn PDF document text
    • http://duxuramubot.epizy.com/china_visa_application_form_delhi.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/20905062611.pdfIn PDF document text
    • http://tokafibalo.epizy.com/62915781909.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/4106387541.pdfIn PDF document text
    • http://tasobigadegef.epizy.com/purble_place_cake_games.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/best_movies_of_all_time_bollywood.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/35973283284.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_off0000e1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C6 5552 bytes
SHA-256: 3f31e8230e969f4271e16b227b7b45104642d963fbc6b4b1ab64638eb7528b32
font_01_sfnt_off0000f4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A2 10392 bytes
SHA-256: 9e2845425c78141608e3f2477c346a5e6060861594812e69d3490341908cba5a