Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d83ea434045e63…

MALICIOUS

PDF

74.7 KB Created: 2021-02-22 05:31:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 881095068a419bdd8c1177816f2922de SHA-1: 3874bf0a56fed40ade34cb85b81af484a0178870 SHA-256: e7d83ea434045e63cf4670c339064a06604e327a0793713099d3b1e315b9af07
192 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a high ML classifier score. The presence of a 'download button' lure further supports a phishing or social engineering attack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites, likely to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=football+manager+2016+tactics+guide In PDF document text
    • http://rrrrkkkkk.space/bizulesezuw8gnux.pdfIn PDF document text
    • http://zuviwadakaji.22web.org/why_is_it_important_for_police_officers_to_write_detailed_reports.pdfIn PDF document text
    • http://katermore.ru/anand_film_ringtonews29u.pdfIn PDF document text
    • http://bojukekaj.66ghz.com/addition_math_worksheets_2nd_grade.pdfIn PDF document text
    • http://1offpark.xyz/u_dictionary_app_offlinehxu4o.pdfIn PDF document text
    • http://komikewewi.iblogger.org/larazusiminesizevixafa.pdfIn PDF document text
    • http://fitdieta.com/vikizawezi0c4m3.pdfIn PDF document text
    • https://fafutetigav.weebly.com/uploads/1/3/0/7/130775448/rarapopowiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nazedizabif.rf.gd/jaruguretasapafelajonegew.pdfIn PDF document text
    • http://simivejed.rf.gd/princeton_review_practice_test_4_answer_key.pdfIn PDF document text
    • http://giserokusifuzi.epizy.com/81373541078.pdfIn PDF document text
    • http://palakojum.rf.gd/critical_thinking_questions_guided_reading.pdfIn PDF document text
    • http://zegudonokor.epizy.com/lopovekivusexunedusik.pdfIn PDF document text
    • http://wumevagijez.epizy.com/takesoxudoropegigoxaza.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/tamil_tv_awards_show_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/powerpoint_template_school_free.pdfIn PDF document text
    • http://wokoziguroron.rf.gd/lelenobepoxuxovano.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/purble_place_for_chromebook.pdfIn PDF document text
    • http://junedujivoxoz.epizy.com/wojiwumipapipujevejibuze.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/castro_valley_high_school_athletic_forms.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_off0000e629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE629 5832 bytes
SHA-256: f5f332ac8b699df00732b02a1841ab3228b660bca78430f5a9a6163d6597daaf
font_01_sfnt_off0000f9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F2 10288 bytes
SHA-256: e17d79736f0824cf7052eca5ee88df7b9475ffa2b6426acddf38fbccaf4fce15

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