Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdd00d8e026a5de…

MALICIOUS

PDF

68.0 KB Created: 2021-03-30 12:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d36851222fcd171356d26bc8b17374a4 SHA-1: 2721092ec6c52ae87d7c8a2316d009364f84b677 SHA-256: bbdd00d8e026a5dec34fb5d1c6ff0d0310a5641f06fbcf27a65c0ad565e613a7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly and sqhk.co domains, suggesting a link farm or SEO poisoning tactic. The presence of ClamAV detection and ML classification as malicious indicates a high likelihood of malicious intent. The embedded URLs are likely used to redirect users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/wix?keyword=television+production+and+broadcast+journalism+workbook+answers+chapter+2
    • https://zebamejiwan.weebly.com/uploads/1/3/4/3/134312785/bafd9e9e.pdf
    • https://cdn.sqhk.co/ligumorik/ihaoxhc/80141657737.pdf
    • https://rapugudunoxe.weebly.com/uploads/1/3/4/0/134012743/logewewi.pdf
    • https://vavixama.weebly.com/uploads/1/3/4/4/134471840/4a237.pdf
    • https://cdn.sqhk.co/tupizurelir/bifjehg/lemufigalibafadorituxot.pdf
    • https://ruzizoradum.weebly.com/uploads/1/3/4/3/134317959/fajemagukawebated.pdf
    • https://cdn.sqhk.co/maxegugej/6hhzjwP/37431519867.pdf
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/4c8420fc50c3.pdf
    • https://cdn.sqhk.co/jegamaxegev/4ihVRhg/teachers_credit_union_24_hour_customer_service.pdf
    • https://cdn.sqhk.co/dizirajeb/bgjihgB/incivility_in_the_workplace_ted_talk.pdf
    • https://cdn.sqhk.co/nifodotiriru/gfJricE/hello_chat_status_download_tamil.pdf
    • https://cdn.sqhk.co/vobevufubito/iaRhigf/52602624983.pdf
    • https://duzesoduvumasu.weebly.com/uploads/1/3/4/1/134131570/juroronami-pesul-wuzujobol-getivob.pdf
    • https://cdn.sqhk.co/pixefavenar/jgsmDib/pokemon_showdown_teams_copy_paste_2020.pdf
    • https://cdn.sqhk.co/pimepojuti/ggrgege/islanders_vs_lightning_2020.pdf
    • https://cdn.sqhk.co/minamojazi/igcwwep/kazamufovukinasime.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zevesijuduma.atwebpages.com/71128998182.pdf
    • http://nuwadolonopip.onlinewebshop.net/bavogupelolukomak.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cba2.bin
fdf7ea25ba55f361b07f4377c36300528e3fe71a7c6e377e30cd4b325e640ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA2 5824 bytes
font_01_sfnt_off0000df57.bin
572ab865dd0bbbed3b71a2f6185c07d6d4b3338913ff6be01b5de1dee2aa1497		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 10152 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.