Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5870c44c17fd334…

MALICIOUS

PDF

79.4 KB Created: 2021-03-03 19:29:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5712d1b5b0ca8d6813f264f7986e01b6 SHA-1: fca9aa752e81347880210e932b870754291e2940 SHA-256: d5870c44c17fd33458298ec6a68f74834231f67866f49a8ecb24d31069993474
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, with a significant number pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful content. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/award?keyword=is+ff12+zodiac+age+good PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5fdd337295d01.pdfIn PDF document text
    • http://getporte.xyz/pafolij9e7z3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465015/normal_60367965dac06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_6029afc69bba0.pdfIn PDF document text
    • https://xitujufos.weebly.com/uploads/1/3/1/4/131483255/dakufulovomusovuniwa.pdfIn PDF document text
    • http://avit0.pro/shadow_the_hedgehog_ps2_iso_espaol_megaf1pzh.pdfIn PDF document text
    • https://fezuwarojeti.weebly.com/uploads/1/3/1/3/131383544/pafuz-petiget-godibaboposugi-futifededo.pdfIn PDF document text
    • http://islta.fun/fight_parking_ticket_template1tiqm.pdfIn PDF document text
    • https://kilazazemuvazu.weebly.com/uploads/1/3/1/4/131452741/povufedelepotaliv.pdfIn PDF document text
    • http://4kuhd.me/mawowinmby5q.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/the_complete_works_of_swami_vivekananda_volume_1.pdfIn PDF document text
    • http://bovakepixoworax.iblogger.org/amazfit_bip_watch_face_ios.pdfIn PDF document text
    • https://wedemewimobuxet.weebly.com/uploads/1/3/4/3/134309086/mugipud.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/wawozisulorifuxuzu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gifimedirawi.epizy.com/math_worksheets_adding_two_digit_numbers.pdfIn PDF document text
    • http://vanuzavabew.epizy.com/leninulitijizadaji.pdfIn PDF document text
    • http://wuzuwoxijotefik.epizy.com/does_java_8_support_functional_programming.pdfIn PDF document text
    • http://voxonirejeze.epizy.com/gelozaligumoteza.pdfIn PDF document text
    • http://balupamujoti.rf.gd/togukevinuzokegusabonada.pdfIn PDF document text
    • http://kojenixerog.myartsonline.com/garmin_vivofit_jr_3_australia_sale.pdfIn PDF document text
    • http://webuguvafu.rf.gd/applied_mathematics_and_information_sciences_scopus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE33 4832 bytes
SHA-256: 018c20fb7dc6ff3b1878c51c51e93ec8394f15282de870a1df036ed79306e662
font_01_sfnt_off0000feb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB3 10544 bytes
SHA-256: 765ed863a42f2eed4de59f5806ded20490e2fde40693c567f064f863456aced1
font_02_sfnt_off0001227a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1227A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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