Malicious PDF — malware analysis report

Static analysis result for SHA-256 80fce7feb1bda771…

MALICIOUS

PDF

71.9 KB Created: 2021-02-17 10:47:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ebb03d246138c7ad30345336281271bf SHA-1: c53a867d93052559f8c9f37d4d0c71e906f94c46 SHA-256: 80fce7feb1bda77109c533be7ef93aac4387b5003208700ad6f0868d3dfd96d6
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=dragon%20age%20origins%20mods%20not%20showing%20up In PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/3797086.pdfIn PDF document text
    • https://teriwogawuf.weebly.com/uploads/1/3/2/8/132815342/71655.pdfIn PDF document text
    • https://piwetidij.weebly.com/uploads/1/3/2/3/132303123/9010222.pdfIn PDF document text
    • https://rurajisikite.weebly.com/uploads/1/3/0/8/130813509/damizafix_baxokuxepimeso_katol_tekigun.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/iwiY0hi/mewe_gallery_company_limited_products.pdfIn PDF document text
    • http://nubavawitaduder.22web.org/65755186128.pdfIn PDF document text
    • https://medivurufif.weebly.com/uploads/1/3/1/4/131407406/4170a607a934.pdfIn PDF document text
    • https://piwixejiwos.weebly.com/uploads/1/3/2/8/132815196/liborozosola-nitugalan-zobusebonisiko-vilibuza.pdfIn PDF document text
    • http://lepasipun.iblogger.org/awdhesh_premi_ke_bhojpuri_video_gana.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dozonexupiwef.epizy.com/lukotusidofovimiwusumi.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/bi_weekly_home_budget_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/balsamiq_mockups_free_for_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/zebadolixiwakoz.pdfIn PDF document text
    • http://laguvimotu.rf.gd/41872562263.pdfIn PDF document text
    • http://wukezize.rf.gd/jenanowesivejebidalevufuj.pdfIn PDF document text
    • http://zogutofarori.epizy.com/iit_kharagpur_mba_application_form_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/newest_android_software_update.pdfIn PDF document text
    • http://tupusivamiguta.rf.gd/fosodorote.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_off0000da72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA72 5432 bytes
SHA-256: 5d5ab86aba2e6efe092fab33196f796dbc8f03b719ea565748bfa9455dcf5e8b
font_01_sfnt_off0000ecd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD6 11116 bytes
SHA-256: 0682d7dd5a56c648c6db9dab583ba8b1574499130941c3bd9872fb93e95592f4