Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bea94c59766d23…

MALICIOUS

PDF

66.3 KB Created: 2021-02-19 23:46:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 829e1c0a78eeb6c7c43b19263924399b SHA-1: 60d78e9a923ce07c63446955820f17f4105b2800 SHA-256: 97bea94c59766d230bf5e7bfa04035904910fa263508e5aa72ea2c00cfbd4bc4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one specifically pointing to 'leonvi.ru' and containing a keyword related to 'outlaw paintball prices'. This suggests a phishing or scam attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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.
  • 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://leonvi.ru/wix?keyword=outlaw+paintball+prices PDF link annotation
    • https://cdn.sqhk.co/segexiji/jdpiced/kung_fu_panda_2_characters_pictures.pdfIn PDF document text
    • https://dasiwijumajofep.weebly.com/uploads/1/3/0/7/130739595/xepakelufiwen-savup.pdfIn PDF document text
    • https://wosowabo.weebly.com/uploads/1/3/4/3/134340570/gokitak.pdfIn PDF document text
    • http://ledivezakaw.iblogger.org/wusegowofusuvebabo.pdfIn PDF document text
    • http://evatopshop.xyz/vawotigoxivugogowaxubadijbbnm2.pdfIn PDF document text
    • https://ronifevux.weebly.com/uploads/1/3/4/7/134737402/sobezoza_daxomur_laturevido.pdfIn PDF document text
    • http://heleogose.online/background_blue_pic5q6eq.pdfIn PDF document text
    • http://submonster.xyz/975801122569hgdk.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/vhjQicA/snapchat_icon_pink.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/je9hfTp/donkey_kong_arcade_game_music.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nepupiborama.rf.gd/26807963878.pdfIn PDF document text
    • http://wonetone.rf.gd/chillar_party_full_movie_openload.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/97078286324.pdfIn PDF document text
    • http://xodenumaverap.epizy.com/vesetusepala.pdfIn PDF document text
    • http://najefitisefema.epizy.com/declarative_question_and_answer.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_off0000c719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC719 5188 bytes
SHA-256: 02bccbb7b90075b78057ca53a50928abfeee41cbefb5b49bf9ef08d798f00b60
font_01_sfnt_off0000d8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D4 10480 bytes
SHA-256: 37d960529406da8ee4458a97b59d777ec19d6a67e53364c8354be3871f98128e

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